A300636 Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

3, 37, 91, 300, 1130, 4418, 17607, 71861, 297729, 1239693, 5164437, 21502279, 89761068, 375474518, 1571013994, 6575412382, 27531230134, 115292976778, 482850728454, 2022211948451, 8469339667129, 35472003909094, 148568669283182

Offset

1,1

Comments

Column 5 of A300639.

Links

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

Example

Some solutions for n=5
..0..0..1..1..0. .0..1..1..1..0. .0..0..0..1..1. .0..0..1..0..0
..1..0..0..1..0. .0..1..1..0..1. .0..0..1..0..1. .0..1..1..1..0
..1..1..0..1..0. .1..0..1..0..1. .0..0..0..0..1. .1..1..0..1..1
..0..1..0..1..1. .1..0..0..1..0. .0..1..0..0..1. .0..1..0..0..0
..0..1..0..0..0. .1..1..1..0..0. .1..0..0..0..1. .0..1..1..1..0

Crossrefs

Cf. A300639.

Sequence in context: A300432 A300766 A030460 * A301358 A163156 A041067

Adjacent sequences: A300633 A300634 A300635 * A300637 A300638 A300639

Keyword

nonn

Author

R. H. Hardin, Mar 10 2018

Status

approved