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A171841
Row sums of triangle A171840
1
1, 3, 8, 22, 68, 241, 974, 4410, 21969, 118698, 688301, 4250788
OFFSET
1,2
EXAMPLE
a(4) = 22 = (1 + 2 + 4 + 15) since (1, 2, 4, 15) = row 4 of triangle A171840.
CROSSREFS
Sequence in context: A092090 A011958 A260661 * A233449 A148770 A369791
KEYWORD
nonn
AUTHOR
Gary W. Adamson, Dec 19 2009
STATUS
approved