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 A191149 #4 Mar 30 2012 18:57:30 %S A191149 1,2,3,4,6,10,12,14,16,21,22,28,30,38,40,46,48,54,62,64,82,84,86,102, %T A191149 110,112,118,120,136,138,150,158,160,182,183,184,190,192,214,244,246, %U A191149 254,256,264,326,328,334,336,342,352,354,406,408,426,438,446,448,470,472,478,480,542,544,550,552,568,570,598,630,638,640,726,730 %N A191149 Integers in (2+A191113)/4; contains A191113 as a proper subsequence. %C A191149 See A191113 and A191146. %e A191149 A191113=(1,2,4,6,10,...), whence (2+A191113)/4=(3/4,1,6/4,2,3,...), so that, retaining only integers, A191149=(1,2,3,...). %t A191149 (See A191113.) %Y A191149 Cf. A191113, A191146. %K A191149 nonn %O A191149 1,2 %A A191149 _Clark Kimberling_, May 27 2011