Schroeder triangle sums: a(n) = A006603(n+3) - A006318(n+3) - A006319(n+2).

A227505

Schroeder triangle sums: a(n) = A006603(n+3) - A006318(n+3) - A006319(n+2).

Terms

    a(0) =1a(1) =6a(2) =31a(3) =154a(4) =763a(5) =3808a(6) =19197a(7) =97772a(8) =502749a(9) =2607658a(10) =13630635a(11) =71743478a(12) =379949431a(13) =2023314980a(14) =10828048409a(15) =58206726936a(16) =314157742457

External references