Expansion of 1/Product_{m>=1} (1 - m*q^m)^19.

Terms

a(0) =1a(1) =19a(2) =228a(3) =2109a(4) =16454a(5) =113164a(6) =705527a(7) =4060870a(8) =21863490a(9) =111178196a(10) =537978635a(11) =2491812228a(12) =11100464810a(13) =47746888432a(14) =198952868210a(15) =805306011651