A171841 Row sums of triangle A171840.
1, 3, 8, 22, 68, 241, 974, 4410, 21969, 118698, 688301, 4250788
Offset: 1
Keywords
Examples
a(4) = 22 = (1 + 2 + 4 + 15) since (1, 2, 4, 15) = row 4 of triangle A171840.
Crossrefs
Cf. A171840
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