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A059685 Split interval orders on n points. 2
1, 2, 5, 16, 63, 315, 1979, 15576, 151606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

Kathrin Bringmann, Yingkun Li, Robert C. Rhoades, Asymptotics for the number of row-Fishburn matrices, European Journal of Combinatorics, vol.41, pp.183-196, (October-2014); preprint.

J. A. Reeds and P. C. Fishburn, Counting split interval orders, Order, Vol. 18, No. 2, 2001, pp. 129-135.

CROSSREFS

Cf. A059685, A058259.

Sequence in context: A136127 A111004 A079566 * A000112 A205498 A295131

Adjacent sequences:  A059682 A059683 A059684 * A059686 A059687 A059688

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Feb 05 2001

STATUS

approved

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Last modified October 19 22:28 EDT 2018. Contains 316378 sequences. (Running on oeis4.)