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

Terms

a(0) =1a(1) =2a(2) =5a(3) =11a(4) =25a(5) =50a(6) =106a(7) =203a(8) =401a(9) =755a(10) =1427a(11) =2597a(12) =4804a(13) =8566a(14) =15352a(15) =27027a(16) =47551a(17) =82187a(18) =142445a(19) =243025a(20) =414919a(21) =700739a(22) =1181236a(23) =1972552a(24) =3293898a(25) =5450728a(26) =9008081a(27) =14791741a(28) =24244399a(29) =39494615