Expansion of 1/(1 - x*Product_{k>=1} 1/(1 - k*x^k)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =17a(5) =49a(6) =135a(7) =380a(8) =1051a(9) =2925a(10) =8119a(11) =22548a(12) =62574a(13) =173767a(14) =482360a(15) =1339126a(16) =3717700a(17) =10321163a(18) =28653557a(19) =79548612a(20) =220843925a(21) =613110573a(22) =1702128034a(23) =4725475979a(24) =13118945083a(25) =36421037100a(26) =101112695940a(27) =280710759278a(28) =779313926949