A302730 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 61, 301, 353, 1307, 4505, 16265, 46773, 136935, 481479, 1631059, 5055540, 16067446, 52668892, 175365361, 562163896, 1807393316, 5893267465, 19311336692, 62623833763, 202770902304, 659588139794, 2152022230238, 6997053941406

Offset

1,2

Comments

Row 5 of A302728.

Links

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

Example

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

Crossrefs

Cf. A302728.

Sequence in context: A091912 A142605 A142133 * A234036 A142217 A234029

Adjacent sequences: A302727 A302728 A302729 * A302731 A302732 A302733

Keyword

nonn

Author

R. H. Hardin, Apr 12 2018

Status

approved