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 A264351 #7 Nov 17 2015 19:15:12 %S A264351 29,1223,1040241,9217,3642669,445435,122279,3667,441089445,1034361, %T A264351 700801,866477098293,536018000953,13456978719,74857,111814836531, %U A264351 2150319955,991403378623407,20008281106509024285,7993723517,17651941238270751,12685,5754260987908903,3427370031,401477253306854423,87725171,225660404935077273,539908248773809,7742211688546213,91867215744119283021,16849,2767937250852453,14617581481552992324155240733,5404928819007703,1310525 %N A264351 The x member of the positive proper fundamental solution (x = x2(n), y = y2(n)) of the second class for the Pell equation x^2 - D(n)*y^2 = +8 for odd D(n) = A263012(n). %C A264351 The corresponding y = y2(n) member are given by A264350(n). %C A264351 See A263012 for details and examples. %F A264351 a(n)^2 - D(n)*y2(n)^2 = 8 with D(n) = A263012(n) and y2(n) = A264351(n), n >= 1. %e A264351 n=1: 29^2 - 17*7^2 = 8. n=4: 9217^2 - 89*977^2 = 8. %Y A264351 Cf. A263011, A263012, A264349, A264350, A264353. %K A264351 nonn %O A264351 1,1 %A A264351 _Wolfdieter Lang_, Nov 17 2015