Expansion of Product_{k>=1} (1 + x^k)^(k*A000010(k)), where A000010 is the Euler totient function.

Terms

a(0) =1a(1) =1a(2) =2a(3) =8a(4) =15a(5) =41a(6) =75a(7) =179a(8) =378a(9) =748a(10) =1591a(11) =3133a(12) =6369a(13) =12357a(14) =24225a(15) =46691a(16) =89301a(17) =169589a(18) =318413a(19) =596255a(20) =1103468a(21) =2036880a(22) =3725353a(23) =6786021a(24) =12281026a(25) =22107132a(26) =39604155a(27) =70566697a(28) =125209095a(29) =221048851