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%I #5 Dec 22 2011 15:16:18
%S 1,1,-1,-17,109,299,-813,-373177,9417917,133861013,-796664399,
%T -229876317317,593496669853,693397771163639,-8404224858061139,
%U -282791345633671703,1818027079738117517,978930433926331599667
%N Numerator of [x^n] of the Taylor series arccosh(exp(x)-arctan(x))= x+x^2/2 -x^3/8 -17*x^4/80 +109*x^5/1920 +299*x^6/2304 -813*x^7/25600 -...
%K sign,frac
%O 1,4
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E Values replaced by numerators. - R. J. Mathar, Dec 22 2011