Row sums of triangle A155856.

Terms

a(0) =1a(1) =2a(2) =6a(3) =23a(4) =107a(5) =590a(6) =3786a(7) =27821a(8) =230869a(9) =2137978a(10) =21873854a(11) =245151555a(12) =2987967551a(13) =39358156310a(14) =557259550034