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A075763 Numbers k that divide A001003(k-1). 2

%I #18 Jun 28 2022 02:50:16

%S 3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,

%T 101,103,105,107,109,113,127,131,137,139,149,151,157,163,167,173,179,

%U 181,191,193,197,199,211,223,227,229,233,239,241,251,257,261,263,269

%N Numbers k that divide A001003(k-1).

%C All the odd primes are in the sequence.

%H Amiram Eldar, <a href="/A075763/b075763.txt">Table of n, a(n) for n = 1..10000</a>

%t 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 *)

%Y Cf. A001003, A075764 (composite terms).

%K easy,nonn

%O 1,1

%A _Benoit Cloitre_, Oct 09 2002

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Last modified April 20 07:43 EDT 2024. Contains 371799 sequences. (Running on oeis4.)