Antidiagonal sums of table A162424.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =37a(6) =87a(7) =210a(8) =523a(9) =1352a(10) =3579a(11) =9715a(12) =26956a(13) =76367a(14) =220408a(15) =648044a(16) =1940191a(17) =5907256a(18) =18279257a(19) =57449874a(20) =183261022a(21) =592970009a(22) =1945136089a(23) =6465415945a(24) =21764630304a(25) =74168652771a(26) =255759582378a(27) =892121078978