Expansion of Sum_{k>=0} x^((k+1)^2)/(1-x)^k.

Terms

a(0) =0a(1) =1a(2) =0a(3) =0a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =2a(10) =3a(11) =4a(12) =5a(13) =6a(14) =7a(15) =8a(16) =10a(17) =13a(18) =17a(19) =22a(20) =28a(21) =35a(22) =43a(23) =52a(24) =62a(25) =74a(26) =89a(27) =108a(28) =132a(29) =162