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A147817 Number of consistent sets of 4 irreflexive binary order relationships over n objects. 1
0, 0, 186, 3050, 20790, 93030, 321580, 930636, 2362500, 5420580 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Table of n, a(n) for n=2..11.

CROSSREFS

Sequence in context: A251499 A251492 A289301 * A318270 A230898 A241942

Adjacent sequences:  A147814 A147815 A147816 * A147818 A147819 A147820

KEYWORD

nonn

AUTHOR

R. H. Hardin May 04 2009

STATUS

approved

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Last modified April 23 13:25 EDT 2019. Contains 322386 sequences. (Running on oeis4.)