Antidiagonal sums of array A094954.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =30a(5) =101a(6) =370a(7) =1459a(8) =6161a(9) =27741a(10) =132621a(11) =670444a(12) =3571013a(13) =19975956a(14) =117026702a(15) =716199026a(16) =4568532550a(17) =30313253547a(18) =208834580360