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 A156187 #15 Jul 02 2020 10:45:23 %S A156187 1,-1,-5,23,205,-1681,-22265,257543,4544185,-67637281,-1491632525, %T A156187 27138236663,718181418565,-15442193173681,-476768795646785, %U A156187 11828536957233383,417370516232719345,-11735529528739490881,-465849831125196593045,14639678925928297567703 %N A156187 Numerator of Euler(n, 1/6). %C A156187 The (unsigned) odd-indexed terms of the sequence appear to give A002439. - _Peter Bala_, May 16 2017 %H A156187 Vincenzo Librandi, <a href="/A156187/b156187.txt">Table of n, a(n) for n = 0..200</a> %H A156187 Michael E. Hoffman, <a href="https://doi.org/10.37236/1453">Derivative Polynomials, Euler Polynomials, and Associated Integer Sequences</a>, The Electronic Journal of Combinatorics, Volume 6.1 (1999): Research paper R21, 13 p. See Eq. (13). %t A156187 Numerator[EulerE[Range[0,20],1/6]] (* _Vincenzo Librandi_, May 04 2012 *) %Y A156187 For denominators see A156189. Cf. A002439. %K A156187 sign,frac %O A156187 0,3 %A A156187 _N. J. A. Sloane_, Nov 07 2009