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 A157232 #8 Nov 06 2022 14:22:59 %S A157232 1,-11,-75,5137,64425,-8116691,-151949475,27061582537,675202758225, %T A157232 -154763675249051,-4826608715002875,1352304080132324737, %U A157232 50608880246719532025,-16757717498380017159011,-731667579810789300424275,279544164877458293190983737,13948943072618103594908145825 %N A157232 Numerator of Euler(n, 3/28). %H A157232 Robert Israel, <a href="/A157232/b157232.txt">Table of n, a(n) for n = 0..328</a> %F A157232 E.g.f.: 2*exp(3*x)/(1+exp(28*x)). - _Robert Israel_, Jan 07 2019 %p A157232 seq(numer(euler(n,3/28)),n=0..50); # _Robert Israel_, Jan 07 2019 %t A157232 EulerE[Range[0,20],3/28]//Numerator (* _Harvey P. Dale_, Nov 06 2022 *) %Y A157232 For denominators see A009972. %K A157232 sign,frac %O A157232 0,2 %A A157232 _N. J. A. Sloane_, Nov 07 2009