Expansion of Product_{k>=0} 1/(1-x^(4*k+1))^2.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =8a(6) =11a(7) =14a(8) =17a(9) =22a(10) =30a(11) =38a(12) =46a(13) =56a(14) =70a(15) =88a(16) =106a(17) =126a(18) =153a(19) =186a(20) =224a(21) =264a(22) =312a(23) =372a(24) =440a(25) =516a(26) =603a(27) =708a(28) =830a(29) =964