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

Terms

a(0) =1a(1) =-1a(2) =-3a(3) =-6a(4) =-18a(5) =-27a(6) =-108a(7) =-81a(8) =-486a(9) =0a(10) =-1458a(11) =8748a(12) =-6561a(13) =118098a(14) =118098a(15) =1003833a(16) =1417176a(17) =11691702a(18) =9565938a(19) =105225318a(20) =114791256a(21) =746143164a(22) =1076168025a(23) =7231849128a(24) =2324522934a(25) =58113073350a(26) =45328197213a(27) =334731302496a(28) =146444944842