| .. |
|
Numbers k such that (prime(k) + composite(k)) == 0 (mod k)
|
1fd328884f
modified: oeis-research/Jianing Song/Least coprime quadratic nonresidue to a(n)/sidef-sqrtmod.pl
|
3 years ago |
|
Numbers k such that sigma(k) = factorial of sum of digits of k
|
6aed7a3c01
Update.
|
3 years ago |
|
Numbers k such that the decimal expansion of the k-th harmonic number starts with the digits of k
|
9abfce7ac0
new file: oeis-research/Antti Karttunen/Numbers k such that derivative(sigma(k)) = k/search.sf
|
3 years ago |
|
Numbers m such that Sum_{k=1..m} omega(k) = sigma(m)
|
bdfb549653
new file: oeis-research/Metin Sariyar/Numbers m such that Sum_{k=1..m} omega(k) = sigma(m)/inverse_sigma_smooth_search.pl
|
2 years ago |
|
Numbers n such that sum of first k composites k^k is prime
|
4d085c9032
Remove commit history
|
3 years ago |
|
Start of the first run of n consecutive primes using only prime digits
|
1377748865
new file: oeis-research/Metin Sariyar/Start of the first run of n consecutive primes using only prime digits/prog.pl
|
3 years ago |
|
Sum of first n prime powers of 2 + prime(n+1) is prime
|
4d085c9032
Remove commit history
|
3 years ago |
|
Twin prime and prime-indices emirps
|
4d085c9032
Remove commit history
|
3 years ago |
trizen
bdfb549653
new file: oeis-research/Metin Sariyar/Numbers m such that Sum_{k=1..m} omega(k) = sigma(m)/inverse_sigma_smooth_search.pl