Expansion of e.g.f. log(1+x)*cosh(x).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-12a(5) =49a(6) =-225a(7) =1301a(8) =-8848a(9) =69441a(10) =-616185a(11) =6095429a(12) =-66475596a(13) =792143793a(14) =-10238194057a(15) =142633278997