Antidiagonal sums of A362885.

Terms

a(0) =1a(1) =1a(2) =4a(3) =12a(4) =37a(5) =123a(6) =440a(7) =1686a(8) =6901a(9) =30085a(10) =139212a(11) =681336a(12) =3515397a(13) =19064135a(14) =108370384a(15) =644142962a(16) =3994439189a(17) =25789465377a(18) =173033812804