A338564 - OEIS

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A338564

Number of cyclic arrangements of {1..n} such that any three neighbors satisfy the triangle inequality.

1

1, 0, 1, 0, 0, 1, 2, 17, 51, 175, 827, 3951, 20428, 115262, 692851, 4324011, 29446302, 211048631, 1623253741, 13109205113

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OFFSET

3,7

COMMENTS

Reversals of these circular permutations are not counted as different.

LINKS

Table of n, a(n) for n=3..22.

Fausto A. C. Cariboni, Complete solutions for a(3)-a(11)

CROSSREFS

Sequence in context: A360416 A192345 A212836 * A125609 A377699 A100518

Adjacent sequences: A338561 A338562 A338563 * A338565 A338566 A338567

KEYWORD

nonn,more

AUTHOR

Fausto A. C. Cariboni, Nov 02 2020

STATUS

approved