Expansion of 1/((1-x)^2*Product_{k>=1} (1-x^k)).

Terms

a(0) =1a(1) =3a(2) =7a(3) =14a(4) =26a(5) =45a(6) =75a(7) =120a(8) =187a(9) =284a(10) =423a(11) =618a(12) =890a(13) =1263a(14) =1771a(15) =2455a(16) =3370a(17) =4582a(18) =6179a(19) =8266a(20) =10980a(21) =14486a(22) =18994a(23) =24757a(24) =32095a(25) =41391a(26) =53123a(27) =67865a(28) =86325a(29) =109350