Expansion of Product_{k>=1} (1 - p(k)*x^k), where p(k) = number of partitions of k (A000041).

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =-1a(4) =-2a(5) =4a(6) =0a(7) =15a(8) =7a(9) =17a(10) =22a(11) =26a(12) =-79a(13) =-2a(14) =-12a(15) =-392a(16) =-250a(17) =-392a(18) =-443a(19) =-640a(20) =-404a(21) =-795a(22) =5106a(23) =1147a(24) =3304a(25) =4542a(26) =32330a(27) =21001a(28) =23372a(29) =21015