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A051590 Number of oriented triangle graphs on binomial(n,2) points. 0
1, 2, 112, 8948032, 1601279890171392, 8048575239544313784372575680 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

REFERENCES

R. H. Jeurissen and Th. Bezembinder, Enumerating oriented triangle graphs, Ars Comb. 42(1996), 151-160

LINKS

Table of n, a(n) for n=2..7.

FORMULA

There is a formula for n <> 4 in the reference, too complicated to repeat here.

CROSSREFS

Sequence in context: A225333 A012525 A165975 * A091302 A209611 A042567

Adjacent sequences:  A051587 A051588 A051589 * A051591 A051592 A051593

KEYWORD

nonn

AUTHOR

R. H. Jeurissen (jeuris(AT)sci.kun.nl)

STATUS

approved

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Last modified October 4 21:22 EDT 2022. Contains 357240 sequences. (Running on oeis4.)