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

Terms

a(0) =1a(1) =3a(2) =1a(3) =5a(4) =1a(5) =11a(6) =1a(7) =9a(8) =13a(9) =11a(10) =1a(11) =45a(12) =1a(13) =15a(14) =41a(15) =49a(16) =1a(17) =79a(18) =1a(19) =117a(20) =85a(21) =23a(22) =1a(23) =297a(24) =81a(25) =27a(26) =145a(27) =309a(28) =1a(29) =483