Expansion of 1 / (1 - Sum_{i>=1, j>=1} x^(i*j^2)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =18a(6) =37a(7) =76a(8) =158a(9) =326a(10) =672a(11) =1386a(12) =2862a(13) =5906a(14) =12187a(15) =25148a(16) =51900a(17) =107103a(18) =221023a(19) =456110a(20) =941256a(21) =1942423a(22) =4008481a(23) =8272094a(24) =17070712a(25) =35227975a(26) =72698206a(27) =150023632a(28) =309596255a(29) =638898274