%I M0915 #27 Sep 13 2021 09:05:28
%S 1,1,-2,-3,16,-10,-114,462,-496,-2952,16920,-31680,-130008,1707576,
%T -14259504,138375720,-1652311680,22238105280,-321916019904,
%U 4959460972224,-81123831838080,1405677742882560,-25732182778727040,496324987642915200,-10061966722201900416
%N Expansion of e.g.f. (1+x)^(1-x).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H Seiichi Manyama, <a href="/A007120/b007120.txt">Table of n, a(n) for n = 0..453</a>
%o (PARI) a(n) = n!*polcoef((1+x+x*O(x^n))^(1-x), n); \\ _Seiichi Manyama_, Sep 13 2021
%Y Cf. A005727.
%K sign
%O 0,3
%A _Simon Plouffe_
%E Signs from _Christian G. Bower_, Nov 15 1998
%E Signs corrected by _Sean A. Irvine_, Oct 17 2017