Expansion of e.g.f. (exp(x)-1)*(exp(x) - x^2/2 - x - 1).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =15a(6) =41a(7) =98a(8) =218a(9) =465a(10) =967a(11) =1980a(12) =4016a(13) =8099a(14) =16277a(15) =32646a(16) =65398a(17) =130917a(18) =261971a(19) =524096a(20) =1048364a(21) =2096919a(22) =4194049a(23) =8388330a(24) =16776914a(25) =33554105a(26) =67108511a(27) =134217348a(28) =268435048a(29) =536870475