Expansion of Product_{m>=1} (1+m*q^m)^26.

Terms

a(0) =1a(1) =26a(2) =377a(3) =4030a(4) =35282a(5) =267020a(6) =1804855a(7) =11133278a(8) =63635364a(9) =340845830a(10) =1725623406a(11) =8314033858a(12) =38329313893a(13) =169845329890a(14) =726114272520