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 A281246 #15 Jan 19 2017 09:24:45 %S A281246 31,43,57,67,23,21,129,61,83,163,99,83,19,155,87,291,279,185,99,199, %T A281246 381,125,239,365,195,129,93,291,399,85,269,221,51,89,21,591,521,19, %U A281246 427,79,235,47,223,407,627,31,11,377,289,513,259,731,219,329,543,743,101 %N A281246 Least positive odd number m such that numerator of zeta(-m) are divisible by A000928(n). %H A281246 Seiichi Manyama, <a href="/A281246/b281246.txt">Table of n, a(n) for n = 1..150</a> %H A281246 Wikipedia, <a href="https://en.wikipedia.org/wiki/Herbrand%E2%80%93Ribet_theorem">Herbrand-Ribet theorem</a> %e A281246 zeta(-11) = 691/32760 and 691 are divisible by A000928(47). So a(47) = 11. %Y A281246 Cf. A000928, A001067. %K A281246 nonn %O A281246 1,1 %A A281246 _Seiichi Manyama_, Jan 18 2017