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A075763 Numbers k that divide A001003(k-1). 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
All the odd primes are in the sequence.
LINKS
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
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Oct 09 2002
STATUS
approved

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Last modified February 29 02:52 EST 2024. Contains 370401 sequences. (Running on oeis4.)