A300495 Number of nX5 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

16, 138, 412, 1513, 5837, 19412, 66166, 233796, 816547, 2856851, 10105271, 35807047, 126898449, 450853006, 1604410583, 5713873343, 20369525696, 72682756405, 259511936921, 927071784687, 3313405502805, 11846749266125

Offset

1,1

Comments

Column 5 of A300498.

Links

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

Example

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

Crossrefs

Cf. A300498.

Sequence in context: A114182 A280601 A301320 * A300934 A300878 A301488

Adjacent sequences: A300492 A300493 A300494 * A300496 A300497 A300498

Keyword

nonn

Author

R. H. Hardin, Mar 07 2018

Status

approved