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 A254120 #8 Feb 05 2015 14:52:26
%S A254120 1,2,6,20,13,179,546,762,1816,14750,41855,130334,184744,854072,
%T A254120 3087888,10703601,15578299,96694224,108119693,514354272,1569052954,
%U A254120 7807991046,23534408763,39516990609,76222439041,402903897267,1860094976924,5552186457189,6550591089598
%N A254120 a(n) = A254118(2^n).
%H A254120 Antti Karttunen, <a href="/A254120/b254120.txt">Table of n, a(n) for n = 0..128</a>
%F A254120 a(n) = A254118(2^n) = A254118(A000079(n)).
%o A254120 (PARI)
%o A254120 for(n=0, 128, write("b254120.txt", n, " ", A254118(2^n))); \\ Needs also code from A254118.
%Y A254120 Cf. A000079, A254118.
%K A254120 nonn
%O A254120 0,2
%A A254120 _Antti Karttunen_, Feb 05 2015