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 A156285 #10 Dec 11 2019 07:15:56 %S A156285 1,-1,-21,71,2541,-14641,-771561,6242711,437721081,-4555133281, %T A156285 -399147115101,5076970085351,533834157267621,-8024733763147921, %U A156285 -984414289344742641,17074591123571719991,2393808447230495554161,-47056485265721520250561 %N A156285 Numerator of Euler(n, 3/10). %C A156285 The (unsigned) odd-indexed terms of the sequence appear to give A208679. - _Peter Bala_, May 16 2017 %H A156285 Vincenzo Librandi, <a href="/A156285/b156285.txt">Table of n, a(n) for n = 0..200</a> %t A156285 Numerator[EulerE[Range[0,20],3/10]] (* _Vincenzo Librandi_, May 05 2012 *) %Y A156285 For denominators see A156276. Cf. A208679. %K A156285 sign,frac %O A156285 0,3 %A A156285 _N. J. A. Sloane_, Nov 07 2009