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 A188060 #17 May 01 2013 21:06:47 %S A188060 8,128,4096,32768,1048576,11593056256,536870912,7767448354816, %T A188060 3014517285978112,191986824837595136,2733227576976736256, %U A188060 66530577009460375453696,5926115612870995607552,488951148984934932554973184,7946710949908368748447692488704,71105936114697022329949662478336 %N A188060 Numerator of 8^(2n-1) |B(2n)| / (2n)!, where B() are the Bernoulli numbers. %C A188060 Start with zeta(2n) = (2Pi)^(2n) |B(2n)| /(2 (2n)!) and replace Pi by 4 arctan(1) and take the numerator of the rational part. The denominator is given by A036278. %e A188060 8/3,128/45,4096/945,32768/4725,... %p A188060 f:=n->8^(2*n)*abs(B(2*n))/(2*(2*n)!); [seq(numer(f(n)),n=1..60)]; %Y A188060 Cf. A002432, A046988, A036278. %K A188060 nonn %O A188060 1,1 %A A188060 _Eric Desbiaux_, Apr 15 2011 %E A188060 Entry revised by _N. J. A. Sloane_, Apr 17 2011