E.g.f.: x^3*(exp(x)-1)^2.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =120a(6) =720a(7) =2940a(8) =10080a(9) =31248a(10) =90720a(11) =251460a(12) =673200a(13) =1753752a(14) =4468464a(15) =11176620a(16) =27518400a(17) =66838560a(18) =160422336a(19) =381014676a(20) =896518800a(21) =2091893160a(22) =4844402640a(23) =11142147324a(24) =25467789600a(25) =57881367600a(26) =130862253600a(27) =294440105700a(28) =659545876080