Unsigned row sums of triangle A136590.

Terms

a(0) =1a(1) =1a(2) =2a(3) =8a(4) =26a(5) =70a(6) =820a(7) =5152a(8) =20316a(9) =388712a(10) =3666188a(11) =17298908a(12) =501805832a(13) =6256792412a(14) =33844737292