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 A218719 #4 Nov 05 2012 12:20:38
%S A218719 0,22,4052,107551,22709274,331407850,197177418061,26457926739667,
%T A218719 2369608176604944,76004727767164666,25163629663367816827,
%U A218719 1965881512952938486496,191165497320828772935835,21700278688179406782082106,560121950820639295011033922
%N A218719 a(n) is smallest number such that a(n)^2 + 1 is divisible by 97^n.
%e A218719 a(3) = 107551 because 107551^2+1 = 2 * 97 ^ 3 * 6337.
%t A218719 b=22;n97=97;jo=Join[{0,b},Table[n97=97*n97;b=PowerMod[b, 97,n97];b=Min[b,n97-b],{99}]]
%Y A218719 Cf. A002522, A049532, A034939, A218709, A218710, A218712, A218713, A218714, A218715, A218716, A218717, A218718.
%K A218719 nonn
%O A218719 0,2
%A A218719 _Michel Lagneau_, Nov 04 2012