Expansion of Product_{m>=1} (1+x^m)^6.

Terms

a(0) =1a(1) =6a(2) =21a(3) =62a(4) =162a(5) =384a(6) =855a(7) =1806a(8) =3648a(9) =7110a(10) =13434a(11) =24702a(12) =44361a(13) =78006a(14) =134592a(15) =228302a(16) =381300a(17) =627840a(18) =1020394a(19) =1638528a(20) =2601849a(21) =4088780a(22) =6363354a(23) =9813504a(24) =15005458a(25) =22760262a(26) =34261248a(27) =51204222a(28) =76005906a(29) =112092438