p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - 6*S^2.

Terms

a(0) =0a(1) =6a(2) =12a(3) =54a(4) =168a(5) =606a(6) =2052a(7) =7134a(8) =24528a(9) =84726a(10) =292092a(11) =1007814a(12) =3476088a(13) =11991246a(14) =41362932a(15) =142682094a(16) =492178848a(17) =1697768166a(18) =5856430572a(19) =20201701974a(20) =69685556808a(21) =240379623486a(22) =829187031012