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

Terms

a(0) =1a(1) =4a(2) =16a(3) =52a(4) =160a(5) =452a(6) =1232a(7) =3204a(8) =8112a(9) =19956a(10) =48112a(11) =113732a(12) =264816a(13) =607876a(14) =1379264a(15) =3096372a(16) =6888784a(17) =15201156a(18) =33306752a(19) =72510916a(20) =156972960a(21) =338089844a(22) =724883552a(23) =1547816708a(24) =3292816416a(25) =6981664708a(26) =14758159472a(27) =31110217524a(28) =65415167744a(29) =137230388228