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 A184530 #6 Mar 30 2012 18:57:16
%S A184530 1,3,4,5,6,7,8,10,11,12,13,14,16,17,18,19,20,22,23,24,25,26,28,29,30,
%T A184530 31,32,34,35,36,37,38,40,41,42,43,44,45,47,48,49,50,51,53,54,55,56,57,
%U A184530 59,60,61,62,63,65,66,67,68,69,71,72,73,74,75,76,78,79
%N A184530 Lower s-Wythoff sequence, where s=5n-4. Complement of A184531.
%C A184530 See A184117 for the definition of lower and upper s-Wythoff sequences.
%t A184530 k = 5; r = 4; d = Sqrt[4 + k^2];
%t A184530 a[n_] := Floor[(1/2) (d + 2 - k) (n + r/(d + 2))];
%t A184530 b[n_] := Floor[(1/2) (d + 2 + k) (n - r/(d + 2))];
%t A184530 Table[a[n], {n, 120}]
%t A184530 Table[b[n], {n, 120}]
%Y A184530 Cf. A184117, A184531.
%K A184530 nonn
%O A184530 1,2
%A A184530 _Clark Kimberling_, Jan 16 2011