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 A287705 #6 Aug 08 2017 11:50:42 %S A287705 1,2,4,8,16,96,64,384,768,2560,1024,6144,4096,860160,245760,98304, %T A287705 196608,1966080,1310720,55050240,22020096,346030080,62914560, %U A287705 125829120,251658240,9160359936,1409286144,939524096,268435456,8053063680,1073741824,496068722688,992137445376 %N A287705 a(n) = denominator(Bernoulli(n, x/2) - Bernoulli(n)). %p A287705 a := n -> denom(bernoulli(n, x/2)-bernoulli(n)): seq(a(i), i=0..39); %Y A287705 Cf. A195441, A224783, A287706, A290645. %K A287705 nonn %O A287705 0,2 %A A287705 _Peter Luschny_, Aug 08 2017