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

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =11a(5) =21a(6) =37a(7) =69a(8) =108a(9) =192a(10) =312a(11) =522a(12) =827a(13) =1297a(14) =2032a(15) =3240a(16) =4982a(17) =7569a(18) =11508a(19) =17107a(20) =25696a(21) =38340a(22) =57080a(23) =83298a(24) =121373a(25) =175653a(26) =253455a(27) =364307a(28) =523650a(29) =747487