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 A239114 #10 Mar 15 2014 05:29:25
%S A239114 1,1,4,1,1,2,1,2,3,1,1,2,3,1,6,1,1,2,1,1,1,3,2,1,5,2,1,4,2,1,3,1,2,1,
%T A239114 1,1,3,1,4,1,2,1,2,5,1,1,1,2,4,1,3,1,2,1,2,1,2,1,4,1,1,3,1,2,1,1,3,2,
%U A239114 1,2,1,3,1,1,8,2,1,1,2,1,2,3,1,5,1,2,3,1,2,1,4,1,1,2,6,1,2,1,3,1
%N A239114 Exponent of 2 in prime factorization (i.e., 2-adic valuation) of odd nonprimes A014076(n) + 1.
%C A239114 Sequence is counterpart to A023512, i.e., merging these two sequences gives the ruler function A001511.
%H A239114 K. G. Stier, <a href="/A239114/b239114.txt">Table of n, a(n) for n = 1..7739</a>
%F A239114 a(n) = A001511((A014076(n)+1)/2)
%e A239114 a(13) = 3, because the 13th odd nonprime is 55, and the largest power of 2 dividing 55+1 is 3.
%o A239114 (PARI) lista(nn) = {forstep(n=1, nn, 2, if (! isprime(n), print1(valuation(n+1, 2), ", ")););} \\ _Michel Marcus_, Mar 13 2014
%Y A239114 Cf. A023512, A001511, A014076.
%K A239114 nonn
%O A239114 1,3
%A A239114 _K. G. Stier_, Mar 10 2014