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 A001958 M3794 N1547 #21 Feb 04 2022 00:44:01
%S A001958 1,5,10,14,18,22,27,31,35,40,44,48,53,57,61,65,70,74,78,83,87,91,96,
%T A001958 100,104,109,113,117,121,126,130,134,139,143,147,152,156,160,164,169,
%U A001958 173,177,182,186,190,195,199,203,207,212,216,220,225,229,233,238,242,246
%N A001958 v-pile numbers of the 3-Wythoff game with i=1.
%C A001958 See Connell (1959) for further information.
%D A001958 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D A001958 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A001958 T. D. Noe, <a href="/A001958/b001958.txt">Table of n, a(n) for n = 0..10000</a>
%H A001958 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 A001958 a(n) = floor( (n+1/3) * (5+sqrt(13)) /2). - _R. J. Mathar_, Feb 14 2011
%t A001958 Table[Floor[(n + 1/3)*(5 + Sqrt[13])/2], {n, 0, 100}] (* _T. D. Noe_, Aug 17 2012 *)
%K A001958 nonn,easy
%O A001958 0,2
%A A001958 _N. J. A. Sloane_
%E A001958 Edited by _Hugo Pfoertner_, Dec 27 2021