Expansion of Product_{k>=1} 1 / (1 - 2*x^k)^3.

Terms

a(0) =1a(1) =6a(2) =30a(3) =122a(4) =450a(5) =1518a(6) =4830a(7) =14586a(8) =42330a(9) =118622a(10) =322974a(11) =857298a(12) =2226586a(13) =5672046a(14) =14205654a(15) =35040722a(16) =85269114a(17) =204971478a(18) =487307542a(19) =1146995154a(20) =2675265522a(21) =6188176838a(22) =14205568950a(23) =32383725450a(24) =73352114450a(25) =165171276822a(26) =369904716750a(27) =824244212554