A013306 - OEIS

%I #17 Sep 20 2018 08:15:26

%S 1,0,0,-1,0,-1,-1,-344,-2,-7733,-4873,-10514857,-3449,-738707,

%T -71666467,-129310473049,-35839,-19576627,-45715711199,

%U -866367643482931,-572765895007711,-274989109970083277,-266112669025361017

%N Numerator of [x^n] of the Taylor series arccosh(exp(x) - arcsin(x)).

%o (PARI) x = 'x + O('x^30); apply(x->numerator(x), Vec((acosh(exp(x) - asin(x))))) \\ _Michel Marcus_, Sep 20 2018

%K sign

%O 1,8

%A Patrick Demichel (patrick.demichel(AT)hp.com)

%E Values replaced by numerators and offset corrected by _Sean A. Irvine_, Aug 05 2018