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 A029765 #11 Jul 08 2025 19:20:22 %S A029765 6,15,105,105,165,15015,1365,255,33915,21945,3795,31395,1365,435, %T A029765 1038345,608685,255,959595,959595,6765,2036265,103845,16215,1090635, %U A029765 255255,8745,105735,57855,25665,1675208535 %N A029765 Denominator of |Bernoulli(2n+2)| - |Bernoulli(2n)|. %H A029765 <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers.</a> %t A029765 Denominator[#[[2]]-#[[1]]]&/@Partition[Abs[BernoulliB[2*Range[0,30]]],2,1] (* _Harvey P. Dale_, May 30 2018 *) %K A029765 nonn,frac %O A029765 0,1 %A A029765 _N. J. A. Sloane_