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A171875
Subdiagonal of triangle A171871: Classifications of N elements containing exactly N-2 binary partitions.
0
0, 0, 1, 3, 17, 74, 358, 1631, 7563, 34751, 160807
OFFSET
2,4
CROSSREFS
Cf. A171871.
Sequence in context: A191587 A290411 A142868 * A356390 A100233 A015525
KEYWORD
nonn
AUTHOR
Robert Munafo, Jan 21 2010
STATUS
approved