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 A001960 M1735 N0687 #39 Dec 27 2021 10:47:41
%S A001960 2,7,11,15,20,24,28,32,37,41,45,50,54,58,63,67,71,76,80,84,88,93,97,
%T A001960 101,106,110,114,119,123,127,131,136,140,144,149,153,157,162,166,170,
%U A001960 174,179,183,187,192,196,200,205,209,213,218,222,226,230,235,239,243,248
%N A001960 a(n) = floor((n+2/3)*(5+sqrt(13))/2); v-pile positions in the 3-Wythoff game.
%C A001960 3-Wythoff game, i=2, the v-pile positions in the Connell terminology. - _R. J. Mathar_, Feb 14 2011
%D A001960 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D A001960 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A001960 T. D. Noe, <a href="/A001960/b001960.txt">Table of n, a(n) for n = 0..10000</a>
%H A001960 Ian G. Connell, <a href="http://dx.doi.org/10.4153/CMB-1959-024-3">A generalization of Wythoff's game</a>, Canad. Math. Bull. 2 (1959) 181-190.
%F A001960 a(n) = floor((n+2/3)*(5+sqrt(13))/2). - _R. J. Mathar_, Feb 14 2011
%t A001960 Table[Floor[(n + 2/3)*(5 + Sqrt[13])/2], {n, 0, 100}] (* _T. D. Noe_, Aug 17 2012 *)
%Y A001960 Complement of A001957.
%Y A001960 Cf. A001954, A001958, A001959, A001963-A001968.
%K A001960 nonn
%O A001960 0,1
%A A001960 _N. J. A. Sloane_
%E A001960 New name from _Hugo Pfoertner_, Dec 27 2021