A058260 - OEIS

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A058260

Number of minimal forbidden posets for split semiorders on n points.

1

0, 0, 0, 0, 2, 1, 2, 16, 58

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OFFSET

1,5

LINKS

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

P. C. Fishburn and J. A. Reeds, Counting split semiorders, Order, 18(2): 119-128, 2001.

Index entries for sequences related to posets

CROSSREFS

Cf. A000111, A058259.

Sequence in context: A334505 A375955 A251731 * A202410 A358495 A271225

Adjacent sequences: A058257 A058258 A058259 * A058261 A058262 A058263

KEYWORD

nonn,hard,more,nice

AUTHOR

N. J. A. Sloane, Dec 06 2000

STATUS

approved