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 A126302 #3 Mar 31 2012 13:21:13 %S A126302 0,1,2,2,3,3,3,4,3,4,4,4,5,4,4,4,5,6,5,4,5,6,4,5,5,5,6,5,5,5,6,7,6,5, %T A126302 6,7,5,5,5,5,6,5,6,6,7,8,7,6,7,8,6,5,5,6,7,6,7,8,9,7,5,6,7,8,5,6,6,6, %U A126302 7,6,6,6,7,8,7,6,7,8,6,6,6,6,7,6,7,7,8,9,8,7,8,9,7,6,6,7,8,7,8,9,10,8 %N A126302 a(n) = Sum of peak heights of the n-th Dyck-path encoded by A014486(n). %F A126302 a(n) = A125989(A014486(n)). %e A126302 A014486(2) = 10 (1010 in binary) which encodes Dyck path /\/\ with two peaks at height=1, thus a(2)=2. %Y A126302 a(n) = a(A125976(n)) for all n. %K A126302 nonn %O A126302 0,3 %A A126302 _Antti Karttunen_, Jan 02 2007