p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S^3)^2.

Terms

a(0) =0a(1) =0a(2) =2a(3) =0a(4) =6a(5) =3a(6) =12a(7) =18a(8) =24a(9) =63a(10) =66a(11) =173a(12) =222a(13) =438a(14) =722a(15) =1146a(16) =2142a(17) =3213a(18) =5958a(19) =9327a(20) =16210a(21) =26898a(22) =44400a(23) =75875a(24) =123252a(25) =210240a(26) =344160a(27) =578052a(28) =958200a(29) =1588404