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 A176546 #5 Mar 30 2012 18:52:05 %S A176546 1,1,1,-1,1,-1,5,-691,7,-3617,43867,-174611,854513,-236364091,8553103, %T A176546 -23749461029,8615841276005,-7709321041217,2577687858367, %U A176546 -26315271553053477373,2929993913841559,-261082718496449122051 %N A176546 Bernoulli numerators A000367 with an additional 1 inserted to represent B_1. %C A176546 Equivalent to adding a 1 in front of A000367, or removing zeros in A164555. %C A176546 (One could also remove zeros in A027641 which would flip the sign of a(1)). %C A176546 The denominators are in A006954. %e A176546 B_0=1/1, B_1=1/2 "originally", B_2=1/6, B_4=-1/30, B_6=1/42,... %Y A176546 Cf. A165908, A174276. %K A176546 less,sign,frac %O A176546 0,7 %A A176546 _Paul Curtz_, Apr 20 2010