A075763 Numbers k that divide A001003(k-1).

3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 105, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 261, 263, 269

Offset

1,1

Comments

All the odd primes are in the sequence.

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Mathematica

s = {}; k1 = k2 = 1; Do[k3 = ((6*n - 9)*k2 - (n - 3)*k1)/n; If[Divisible[k3, n], AppendTo[s, n]]; k1 = k2; k2 = k3, {n, 3, 300}]; s (* Amiram Eldar, Jun 28 2022 *)

Crossrefs

Cf. A001003, A075764 (composite terms).

Sequence in context: A275938 A093893 A056912 * A074918 A175524 A073579

Adjacent sequences: A075760 A075761 A075762 * A075764 A075765 A075766

Keyword

easy,nonn

Author

Benoit Cloitre, Oct 09 2002

Status

approved