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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,4

LINKS

Table of n, a(n) for n=2..12.

R. Munafo, Classifications of N Elements

CROSSREFS

Sequence in context: A191587 A290411 A142868 * A100233 A015525 A062224

Adjacent sequences:  A171872 A171873 A171874 * A171876 A171877 A171878

KEYWORD

nonn

AUTHOR

Robert Munafo, Jan 21 2010

STATUS

approved

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Last modified August 20 13:35 EDT 2017. Contains 290835 sequences.