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 A096122 #3 Mar 31 2012 14:11:24 %S A096122 1,2,4,17,62 %N A096122 a(n) is the exponent of 2 in x = 2^m*5^n, where x = b(n)-b(n-1) and b(n) and b(n-1) are consecutive terms in A050649. %e A096122 a(3) = 2: b(3)-b(2) = 2512-12 = 2500; 2500 = 2^2*5^4, hence a(3)=2. %Y A096122 Cf. A050649. %K A096122 nonn %O A096122 2,2 %A A096122 _Ray G. Opao_, Jul 23 2004