Row sums of triangle defined in A120853.

Terms

a(0) =1a(1) =3a(2) =6a(3) =10a(4) =45a(5) =141a(6) =973a(7) =6476a(8) =58257a(9) =582535a(10) =6407841a(11) =76894038a(12) =999622429a(13) =13994713929a(14) =209920708845