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

Terms

a(0) =0a(1) =1a(2) =6a(3) =20a(4) =56a(5) =160a(6) =480a(7) =1456a(8) =4384a(9) =13136a(10) =39360a(11) =118064a(12) =354272a(13) =1062928a(14) =3188736a(15) =9565936a(16) =28697632a(17) =86093264a(18) =258280512a(19) =774841520a(20) =2324523104a(21) =6973567888a(22) =20920705152a(23) =62762119792a(24) =188286360736a(25) =564859074896