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A229713 Number of arrays of length n that are sums of 3 consecutive elements of length n+2 permutations of 0..n+1, and no two consecutive rises or falls in the latter permutation 0
1, 8, 28, 82, 500, 2740, 15040, 100630, 704000, 5310960, 44616536 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A229717

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..8....9....3...12....6....6...10....8....8....9...10....8....8....9....7....6

.12....8....8....9...11....9....9....6....9...12...12....9....3...11....6....7

..8...11....9....8....8....6....4...10....4....8....7...12....6....7...10....4

..7....6...12....3....9....9....5....7....7....6....5....7....7....6....8....9

CROSSREFS

Sequence in context: A331757 A130129 A317032 * A212516 A005343 A200941

Adjacent sequences:  A229710 A229711 A229712 * A229714 A229715 A229716

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 27 2013

STATUS

approved

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Last modified August 13 05:41 EDT 2020. Contains 336442 sequences. (Running on oeis4.)