Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Feb 24 2012 12:51:27
%S 1,0,0,-40,0,-480,246400,-8320,51251200,-12197916160,11394406400,
%T -15296025241600,2348235343872000,-17026923803402240,
%U 10977173716094976000,-1257676453660275015680
%N cos(sin(x)-sinh(x))=1-40/6!*x^6-480/10!*x^10+246400/12!*x^12...
%K sign
%O 0,4
%A Patrick Demichel (patrick.demichel(AT)hp.com)