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

Terms

a(0) =1a(1) =26a(2) =351a(3) =3302a(4) =24427a(5) =151658a(6) =822484a(7) =4001660a(8) =17799041a(9) =73391968a(10) =283542740a(11) =1034983222a(12) =3593364255a(13) =11931569028a(14) =38062054017a(15) =117095671862a(16) =348538604492