a(n) is the product of the numbers k such that a(n-2*k) = a(n-k) and 0 < n-2*k < n-k < n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =3a(7) =1a(8) =1a(9) =1a(10) =1a(11) =8a(12) =10a(13) =90a(14) =42a(15) =42a(16) =56a(17) =56a(18) =72a(19) =9a(20) =10a(21) =1a(22) =1a(23) =1a(24) =1a(25) =2a(26) =2a(27) =3a(28) =8a(29) =1