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A268117 Number of nX(n+1) arrays of permutations of n+1 copies of 0..n-1 with every element equal to or 1 greater than any north or west neighbors modulo n and the upper left element equal to 0. 0
1, 10, 30, 182, 1687, 24745, 586844, 22971957, 1520467020 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Superdiagonal 1 of A268115.

LINKS

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

EXAMPLE

Some solutions for n=6

..0..0..1..2..3..4..4....0..0..1..1..2..3..4....0..1..2..2..3..4..5

..0..1..2..3..3..4..5....0..1..1..2..3..4..5....1..2..3..3..4..5..0

..1..2..2..3..4..5..0....1..1..2..3..4..5..5....2..3..3..4..5..0..1

..1..2..3..4..5..5..0....2..2..2..3..4..5..0....3..4..4..5..0..0..1

..1..2..3..4..5..5..0....2..3..3..4..5..5..0....4..4..5..0..1..1..2

..1..2..3..4..5..0..1....3..4..4..5..0..0..1....5..5..0..1..2..2..3

CROSSREFS

Cf. A268115.

Sequence in context: A301664 A259136 A098684 * A256879 A064012 A276180

Adjacent sequences:  A268114 A268115 A268116 * A268118 A268119 A268120

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2016

STATUS

approved

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Last modified March 20 23:22 EDT 2019. Contains 321354 sequences. (Running on oeis4.)