p-INVERT of the positive integers, where p(S) = 1 - 5*S^2.

Terms

a(0) =0a(1) =5a(2) =20a(3) =75a(4) =300a(5) =1200a(6) =4780a(7) =19045a(8) =75900a(9) =302475a(10) =1205400a(11) =4803680a(12) =19143320a(13) =76288725a(14) =304020900a(15) =1211564475a(16) =4828248580a(17) =19241224720a(18) =76678887300a(19) =305575754325