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 A238164 #9 Aug 11 2014 22:46:10 %S A238164 1,-1,7,-465,48006,-12072375,6301495035,-12203470904625, %T A238164 20180112406353900,-53495387545025175750,216267236072968468547250, %U A238164 -1280630367874799320798794375,10743714652441927865738713818750,-124178158916511109662405449217796875,1930915681227482441797773554892002071875 %N A238164 2^floor(log[2](n+1))*(2*n+1)!*Bernoulli(2*n,1/2). %C A238164 Motivated by the original definition of A033473 which turned out to produce a non-integer sequence. %H A238164 M. F. Hasler, <a href="/A238164/b238164.txt">Table of n, a(n) for n = 0..50</a> %H A238164 <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers.</a> %o A238164 (PARI) n->(2*n+1)!*subst(bernpol(2*n,x),x,1/2)<<(log(n+1)\log(2)) %K A238164 sign %O A238164 0,3 %A A238164 _M. F. Hasler_, Feb 18 2014