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 A190845 #5 Mar 30 2012 18:57:29 %S A190845 1,4,7,13,22,25,34,40,43,49,61,67,76,79,85,97,115,121,130,133,148,151, %T A190845 157,169,193,196,202,223,229,238,241,256,259,265,292,295,301,304,313, %U A190845 337,358,364,385,391,400,403,439,445,454,457,472,475,481 %N A190845 Integers in (1+A190805)/2; contains A190805 as a proper subsequence. %C A190845 See A190803. %t A190845 (See A190805.) %Y A190845 Cf. A190803, A190805. %K A190845 nonn %O A190845 1,2 %A A190845 _Clark Kimberling_, May 25 2011