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

Terms

a(0) =-1a(1) =0a(2) =8a(3) =16a(4) =24a(5) =96a(6) =360a(7) =1008a(8) =2808a(9) =8640a(10) =26568a(11) =79056a(12) =235224a(13) =707616a(14) =2128680a(15) =6380208a(16) =19123128a(17) =57386880a(18) =172213128a(19) =516586896a(20) =1549603224a(21) =4648967136a(22) =13947373800a(23) =41841649008a(24) =125523529848a(25) =376572006720