A201622 Number of nX5 0..3 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor

16, 718, 31802, 2111763, 136175057, 8368969235, 464328365996, 23135668030252, 1040850319379231, 42653434489979374, 1606362705401822170, 56058651943376958129, 1826011093775518985924, 55867244848599391254270

Offset

1,1

Comments

Column 5 of A201625

Links

R. H. Hardin, Table of n, a(n) for n = 1..54

Example

Some solutions for n=3
..0..0..2..3..3....0..0..1..1..1....0..1..1..3..3....0..0..1..2..2
..0..2..2..0..3....2..2..0..3..3....0..2..2..0..1....1..1..1..1..1
..3..3..2..0..0....3..3..0..0..0....2..2..2..0..1....1..1..2..2..2

Crossrefs

Sequence in context: A294704 A264114 A356482 * A362574 A220809 A221023

Adjacent sequences: A201619 A201620 A201621 * A201623 A201624 A201625

Keyword

nonn

Author

R. H. Hardin Dec 03 2011

Status

approved