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Carmichael numbers n such that n-1 is a perfect power
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4d085c9032
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3 years ago |
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Composite integers n such that the sum of the Pell numbers is divisible by n
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4d085c9032
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3 years ago |
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Integers n such that n-th prime divides the n-th golden rectangle number
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4d085c9032
Remove commit history
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3 years ago |
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Integers n such that the n-th prime divides the n-th Pell number
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4d085c9032
Remove commit history
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3 years ago |
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Least k such that k is the product of n distinct primes and sigma(k) is an n-th power
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cbedf2c758
new file: oeis-research/Altug Alkan/Least k such that k is the product of n distinct primes and sigma(k) is an n-th power/smooth_generate_almost_primes.pl
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3 years ago |
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Least k such that k^n + 1 is the product of n distinct primes
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7d83987246
Update.
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9 months ago |
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Least k such that phi(k) is an n-th power when k is the product of n distinct primes
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9303a08f23
Update.
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1 year ago |
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Least k such that sigma(k) is a Fibonacci number when k is the product of n distinct primes
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147f6207b2
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1 year ago |
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Least prime p such that p^n + 1 is the product of n distinct primes
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7bbb8b9505
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1 year ago |
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Smallest k such that psi(k) and phi(k) have same distinct prime factors when k is the product of n distinct primes
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61449f48a1
Update.
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9 months ago |
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a(n) is the smallest k such that psi(k) = factorial(n)
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61449f48a1
Update.
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9 months ago |
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a(n) is the smallest k such that usigma(k) = primorial(n)
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03d527b095
new file: oeis-research/Altug Alkan/a(n) is the smallest k such that usigma(k) = primorial(n)/upper-bounds.sf
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3 years ago |
