A013286 - OEIS

%I #4 Feb 24 2012 12:51:25

%S 1,0,0,0,-3,40,-250,1008,-6307,77040,-742524,5642560,-56921887,

%T 809088696,-10450329838,122609052720,-1712600698983,28629942196960,

%U -466274068556152,7411488125575680,-130844029905109723

%N cos(log(x+1)-tanh(x))=1-3/4!*x^4+40/5!*x^5-250/6!*x^6+1008/7!*x^7...

%K sign

%O 0,5

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