Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Feb 24 2012 12:51:02
%S 1,-12,-3248,-19157952,-518516045568,-41950819968248832,
%T -7989124180734318489600,-3074627327620950467600302080,
%U -2150601092109458094146556003287040
%N cos(arcsinh(x)*arcsin(x))=1-12/4!*x^4-3248/8!*x^8-19157952/12!*x^12...
%K sign
%O 0,2
%A Patrick Demichel (patrick.demichel(AT)hp.com)