This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A092408 #9 Aug 10 2021 11:06:02 %S A092408 1,2,34,386,578,6562,9826,74498,111554,167042,1100546,1192354,1266466, %T A092408 1896418,2839714,14378114,18709282,20270018,21529922,32239106, %U A092408 35759426,48275138,191812802,212405378,230124322,244427938,318057794,344590306 %N A092408 Numbers k that divide 3^(k^3) + 1. %C A092408 It appears that all numbers of the form 2*17^m are present. %t A092408 Select[ Range[ 350000000], PowerMod[3, #^3, # ] +1 == # &] %Y A092408 Cf. A015949, A093546, A093666. %K A092408 nonn %O A092408 1,2 %A A092408 _Robert G. Wilson v_, Apr 02 2004