Expansion of Product_{k>=1} 1 / (1 + 3^(k-1)*x^k).

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =-7a(4) =-11a(5) =-43a(6) =-65a(7) =-259a(8) =-146a(9) =-1798a(10) =826a(11) =-8116a(12) =17593a(13) =-35089a(14) =301903a(15) =-308464a(16) =3582403a(17) =157367a(18) =28816009a(19) =9388694a(20) =329375419a(21) =-61352008a(22) =2991009094a(23) =509592773a(24) =23675224255a(25) =1207374806a(26) =229200996508a(27) =-129896994130a(29) =-816324790165