A090450 Row sums of triangle A090447.

1, 2, 5, 22, 221, 5556, 352897, 56909000, 23456163817, 24862388706622, 68125408037874461, 484697617517152241192, 8987761653844408528516645, 435751632681268773059903563592, 55389930392445599773550918556967161

Offset: 0

Author

Wolfdieter Lang, Dec 23 2003

Keywords

• nonn
• easy

Crossrefs

Cf. A090451 (alternating row sums).

Formula

a(n)=sum(A090447(n, m), m=0..n), n>=0.