Expansion of Product_{m>=1} (1 + q^m)^(3*m).

Terms

a(0) =1a(1) =3a(2) =9a(3) =28a(4) =72a(5) =183a(6) =443a(7) =1026a(8) =2313a(9) =5072a(10) =10860a(11) =22767a(12) =46862a(13) =94806a(14) =188886a(15) =371068a(16) =719493a(17) =1378449a(18) =2611540a(19) =4896291a(20) =9090651a(21) =16723930a(22) =30501744a(23) =55177932a(24) =99048719a(25) =176500572a(26) =312330813a(27) =549033172