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 A125213 #9 Dec 16 2024 22:18:21
%S A125213 17,19,29,31,45,49,57,59,63,69,73,79,83,85,87,89,97,99,101,107,109,
%T A125213 115,119,121,129,131,135,139,143,149,151,157,159,161,165,169,171,173,
%U A125213 177,179,185,187,189,195,197,199,209,213,217,219,223,227,229,233,235,249,255,259
%N A125213 Integers m such that no prime exists of the form abs(k! - 3m - 1), abs(k! - 3m), or abs(k! - 3m + 1).
%C A125213 3*a(n) are the indices of the middle terms in the triples of consecutive zeros in A125211. The middle index of most consecutive zero triples in A125211 is odd and is a multiple of 3.
%e A125213 Triplets of consecutive zeros in A125211: {50,51,52}, {56,57,58}, {86,87,88}, {92,93,94}, ...
%Y A125213 Cf. A125162, A125163, A125164, A125211, A125212.
%K A125213 nonn
%O A125213 1,1
%A A125213 _Alexander Adamchuk_, Nov 23 2006
%E A125213 Edited and extended by _Max Alekseyev_, Feb 10 2010