# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a009333 Showing 1-1 of 1 %I A009333 #14 Jun 22 2015 22:16:26 %S A009333 0,1,-1,4,-8,20,-61,208,-888,4304,-24001,149312,-1028048,7745088, %T A009333 -63374221,559452416,-5299033488,53597321472,-576514338721, %U A009333 6570832389120,-79100066353208,1002840464045056,-13355627237749501,186406420596609024 %N A009333 Expansion of log(1+sin(x))*cosh(x). %F A009333 a(n) ~ (n-1)! * (-1)^(n+1) * cosh(Pi/2) * 2^(n+1) / Pi^n. - _Vaclav Kotesovec_, Jan 23 2015 %t A009333 Log[ 1+Sin[ x ] ]*Cosh[ x ] %t A009333 CoefficientList[Series[Cosh[x]*Log[1 + Sin[x]], {x, 0, 20}], x] * Range[0, 20]! (* _Vaclav Kotesovec_, Jan 23 2015 *) %K A009333 sign,easy %O A009333 0,4 %A A009333 _R. H. Hardin_ %E A009333 Extended with signs by _Olivier GĂ©rard_, Mar 15 1997 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE