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A266127 Number of nX4 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself. 1
5, 49, 117, 572, 4336, 19750, 102201, 620508, 3041449, 16217839, 93738044, 476322405, 2546428711, 14301936049, 74467601183, 398781566199, 2199927226366, 11619003130461, 62319679692416, 340185096129345, 1811374715345253 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A266131.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..2..1..0..1....1..0..2..1....1..0..0..0....1..0..0..1....0..0..1..1

..2..1..1..0....0..2..0..1....0..2..2..1....0..2..2..0....0..2..0..1

..1..2..2..1....0..2..1..2....0..2..1..1....1..0..2..1....0..2..1..0

..0..0..0..0....0..0..1..2....1..0..0..1....1..2..0..1....0..2..1..2

CROSSREFS

Cf. A266131.

Sequence in context: A298773 A298580 A299572 * A343690 A298394 A299512

Adjacent sequences: A266124 A266125 A266126 * A266128 A266129 A266130

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2015

STATUS

approved

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Last modified November 28 05:56 EST 2022. Contains 358407 sequences. (Running on oeis4.)