A266064 - OEIS

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A266064

Number of nX4 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.

5, 89, 81, 525, 8262, 25663, 148323, 1480037, 7361668, 43625889, 337487030, 1992491986, 12259297662, 84919942819, 531642104603, 3345439670726, 22164717425170, 141438239886755, 900411960327132, 5860940525461256

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 4 of A266067.

LINKS

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

EXAMPLE

Some solutions for n=4

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

..1..2..3..2....2..1..1..2....0..1..2..0....2..3..3..1....0..2..0..1

..2..3..0..1....2..1..1..2....2..2..3..0....1..2..3..2....0..2..2..2