a(n) is defined by Product_{i>=1} (1-a(i)*x^i) = Sum_{i>=0} möbius(i+1)*x^i.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =6a(7) =8a(8) =13a(9) =22a(10) =35a(11) =48a(12) =89a(13) =129a(14) =228a(15) =345a(16) =609a(17) =897a(18) =1624a(19) =2421a(20) =4295a(21) =6598a(22) =11855a(23) =18217a(24) =32396a(25) =49787a(26) =88387a(27) =139517a(28) =246442a(29) =380905