Row sums of triangle A166900.

A166904

Row sums of triangle A166900.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =40a(4) =321a(5) =3361a(6) =43667a(7) =679806a(8) =12358885a(9) =257281501a(10) =6039232167a(11) =157879127902

External references