# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a013317 Showing 1-1 of 1 %I A013317 #12 Mar 19 2023 17:47:07 %S A013317 0,1,2,-1,-24,-123,2,5987,54544,66441,-4948798,-71261177,-226393992, %T A013317 9534896269,201964922434,1166083278955,-34861258001632, %U A013317 -1052810665903343,-9456771887276926,211545075206125327 %N A013317 Expansion of e.g.f.: tanh(exp(x) - cos(x)) = x + (2/2!)*x^2 - (1/3!)*x^3 - (24/4!)*x^4 - (123/5!)*x^5 + ... %t A013317 With[{nn=20},CoefficientList[Series[Tanh[Exp[x]-Cos[x]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Mar 05 2023 *) %K A013317 sign %O A013317 0,3 %A A013317 Patrick Demichel (patrick.demichel(AT)hp.com) %E A013317 Zero prepended and definition clarified by _Harvey P. Dale_, Mar 05 2023 %E A013317 Offset corrected for above change by _Sean A. Irvine_, Mar 19 2023 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE