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Least k such that k*prime(k) > 10^n
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ed0aad05ed
renamed: oeis-research/Amarnath Murthy/Least k such that k*prime(k) > 10^n/Least k such that k*prime(k) > 10^n.pl -> oeis-research/Amarnath Murthy/Least k such that k*prime(k) > 10^n/prog.pl
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3 years ago |
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Smallest k such that n, k and n+k have the same prime signature
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5427f05b84
Update.
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1 year ago |
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Smallest number sandwiched between two numbers having exactly n prime divisors
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d5eaac8bd7
new file: oeis-research/Amarnath Murthy/Smallest number sandwiched between two numbers having exactly n prime divisors/generate_fast.pl
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10 months ago |
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Smallest prime which is 1 more than a product of n distinct primes: a(n) is a prime and a(n) - 1 is a squarefree number with n prime factors
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fc775e378b
Update.
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1 year ago |
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Sum of the remainders when n^2 is divided by squares < n
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342d8ebfb7
new file: oeis-research/Amarnath Murthy/Sum of the remainders when n^2 is divided by squares < n/prog.sf
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3 years ago |
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a(1) = 1, for n>1 a(n) = largest prime divisor of A062273(n)
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c62dbc2a9d
modified: factordb/auto.sf -- try to factor n, before failling
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2 years ago |
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a(1) = 2, a(n+1) = a(n)-th squarefree number
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abe0937533
new file: oeis-research/Amarnath Murthy/a(1) = 2, a(n+1) = a(n)-th squarefree number/prog.sf
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2 years ago |
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a(n) = the largest prime divisor of the number C(n) formed from the concatenation of 1,2,3,... up to n
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ad2c9fa5b1
Update.
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2 years ago |
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a(n) = the largest prime divisor of the number C(n) formed from the reverse concatenation of 1,2,3,... up to n
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ad2c9fa5b1
Update.
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2 years ago |
trizen
d5eaac8bd7
new file: oeis-research/Amarnath Murthy/Smallest number sandwiched between two numbers having exactly n prime divisors/generate_fast.pl