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 A107687 #5 Mar 30 2012 18:50:50 %S A107687 6,12,13,14,22,24,25,28,29,30,38,44,45,46,48,49,54,56,57,60,61,62,70, %T A107687 76,77,78,86,88,89,92,93,94,96,97,102,108,109,110,112,113,118,120,121, %U A107687 124,125,126,134,140,141,142,150,152,153,156,157,158,166,172,173,174,176 %N A107687 Complement of A107686. %K A107687 nonn %O A107687 1,1 %A A107687 _Reinhard Zumkeller_, May 20 2005 %E A107687 Corrected by _T. D. Noe_, Oct 25 2006