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A268114 Number of nXn arrays containing n 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, 3, 8, 25, 111, 761, 9204, 194567, 7088277, 450354517 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A268115.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A268115.

Sequence in context: A184325 A051403 A004205 * A097713 A009392 A130648

Adjacent sequences:  A268111 A268112 A268113 * A268115 A268116 A268117

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2016

STATUS

approved

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Last modified October 15 09:22 EDT 2019. Contains 328026 sequences. (Running on oeis4.)