A051590 - OEIS

A051590

Number of oriented triangle graphs on binomial(n,2) points.

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

FORMULA

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

CROSSREFS

KEYWORD

nonn,more

AUTHOR

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

STATUS

approved