A122892 Secondary diagonal of triangle A122890.

1, 10, 70, 424, 2382, 12804, 66946, 343772, 1744314, 8780912, 43976688, 219546976, 1094132461, 5448766458, 27135655714, 135218356264, 674461583180, 3368432133000, 16847360404260, 84396523333080, 423485559461250

Offset: 4

Author

Paul D. Hanna, Sep 18 2006

Keywords

• nonn

Comments

The main diagonal of triangle A122890 equals the Catalan numbers (A000108); this is the diagonal immediately below (with leading zeros omitted).

Crossrefs

Cf. A122890, A122888; A122887.