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%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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