A171841 Row sums of triangle A171840

1, 3, 8, 22, 68, 241, 974, 4410, 21969, 118698, 688301, 4250788

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Example

a(4) = 22 = (1 + 2 + 4 + 15) since (1, 2, 4, 15) = row 4 of triangle A171840.

Crossrefs

Cf. A171840

Sequence in context: A092090 A011958 A260661 * A233449 A148770 A369791

Adjacent sequences: A171838 A171839 A171840 * A171842 A171843 A171844

Keyword

nonn

Author

Gary W. Adamson, Dec 19 2009

Status

approved