Binomial row sums of triangle A191490.

Terms

a(0) =1a(1) =2a(2) =7a(3) =36a(4) =245a(5) =2071a(6) =20813a(7) =241344a(8) =3161473a(9) =46056783a(10) =737269244a(11) =12845501191a(12) =241719339485