p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - 4 S + S^2.

Terms

a(0) =4a(1) =15a(2) =60a(3) =239a(4) =952a(5) =3792a(6) =15104a(7) =60161a(8) =239628a(9) =954465a(10) =3801740a(11) =15142752a(12) =60315260a(13) =240242367a(14) =956911980a(15) =3811486495a(16) =15181573232a(17) =60469889136a(18) =240858271816a(19) =959365196977