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 A002340 M3739 N1528 #23 Oct 15 2023 01:41:45 %S A002340 5,4,8,7,6,11,8,9,14,18,13,11,17,16,12,13,14,28,19,14,18,16,27,22,31, %T A002340 16,17,26,19,34,24,23,22,28,37,41,27,32,21,26,22,23,31,22,44,48,23,29, %U A002340 39,43,24,38,51,32,26,31,28,29,36,41,27,58,28 %N A002340 Numbers x such that p = x^2 - 5y^2, where p == 0, 1, or 4 (mod 5). %D A002340 A. J. C. Cunningham, Quadratic Partitions. Hodgson, London, 1904, p. 1. %D A002340 D. H. Lehmer, Guide to Tables in the Theory of Numbers. Bulletin No. 105, National Research Council, Washington, DC, 1941, p. 55. %D A002340 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A002340 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A002340 A. J. C. Cunningham, <a href="/A002330/a002330.pdf">Quadratic Partitions</a>, Hodgson, London, 1904. [Annotated scans of selected pages] %Y A002340 Cf. A002341. %K A002340 nonn %O A002340 1,1 %A A002340 _N. J. A. Sloane_ %E A002340 Corrected and extended by _Sean A. Irvine_, Oct 21 2013 %E A002340 Offset corrected by _Mohammed Yaseen_, Jul 24 2023