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 A264355 #6 Nov 22 2015 15:26:48 %S A264355 8,17,28,41,56,73,89,92,97,113,124,136,137,161,184,188,193,217,233, %T A264355 241,248,281,284,313,316,329,337,353,376,392,409,412,433,449,457,476, %U A264355 497,508,521,553,568,569,593,601,604,617,632,641,668,673,713,721,764,769,776,796,809,824,833,857,881,889,892,929,937,952,953,956,977,1016,1033,1049,1052,1057,1081,1084,1097,1148,1153 %N A264355 The values D not a square that admit proper solutions (x, y) to the Pell equation x^2 - D*y^2 = +8, ordered increasingly. %C A264355 This sequence is the union of A263012 and A264354. See these sequences for details and examples. %C A264355 For square D the only solution is D=1 with (3, 1). %C A264355 Improper solutions derive from 2*(X, Y) with (X, Y) proper solutions for D a member of A261246. %Y A264355 Cf. A263012, A264354, A261246. %K A264355 nonn %O A264355 1,1 %A A264355 _Wolfdieter Lang_, Nov 19 2015