Expansion of e.g.f. (1+x)*cosh(x)^2.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =8a(5) =40a(6) =32a(7) =224a(8) =128a(9) =1152a(10) =512a(11) =5632a(12) =2048a(13) =26624a(14) =8192a(15) =122880a(16) =32768a(17) =557056a(18) =131072a(19) =2490368a(20) =524288a(21) =11010048a(22) =2097152a(23) =48234496a(24) =8388608a(25) =209715200a(26) =33554432a(27) =905969664a(28) =134217728a(29) =3892314112