p-INVERT of (1,2,1,3,1,4,1,5,...) (A133622), where p(S) = 1 - S - S^2.

Terms

a(0) =1a(1) =4a(2) =12a(3) =38a(4) =114a(5) =354a(6) =1076a(7) =3311a(8) =10120a(9) =31043a(10) =95044a(11) =291284a(12) =892242a(13) =2733804a(14) =8375092a(15) =25659298a(16) =78610859a(17) =240840496a(18) =737856017a(19) =2260561368a(20) =6925635380a(21) =21217961710a(22) =65005083598a(23) =199154984626a(24) =610147638720