Expansion of Product_{m>=1} (1 + m*q^m)^7.

Terms

a(0) =1a(1) =7a(2) =35a(3) =154a(4) =588a(5) =2065a(6) =6790a(7) =21071a(8) =62447a(9) =177863a(10) =489279a(11) =1305402a(12) =3389603a(13) =8587999a(14) =21280436a(15) =51674728a(16) =123161500a(17) =288539664a(18) =665292642a(19) =1511359766a(20) =3386065697a(21) =7488093282a(22) =16357998447a(23) =35324428405a(24) =75453678433a(25) =159512035137a(26) =333918915120a(27) =692516812176