A266127 Number of n X 4 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.

5, 49, 117, 572, 4336, 19750, 102201, 620508, 3041449, 16217839, 93738044, 476322405, 2546428711, 14301936049, 74467601183, 398781566199, 2199927226366, 11619003130461, 62319679692416, 340185096129345, 1811374715345253

Offset: 1

Author

R. H. Hardin, Dec 21 2015

Keywords

• nonn

Comments

Column 4 of A266131.

Examples

			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
		

Links

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

Crossrefs

Cf. A266131.