A303412 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 61, 541, 902, 4013, 29411, 160247, 660748, 3071197, 17079507, 88199621, 419285701, 2063343133, 10608771290, 53689192266, 265848111937, 1327085663799, 6701302273037, 33718513860297, 168717573787828, 845811333794914

Offset

1,2

Comments

Row 5 of A303410.

Links

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

Example

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

Crossrefs

Cf. A303410.

Sequence in context: A167445 A302531 A061002 * A209548 A302898 A234926

Adjacent sequences: A303409 A303410 A303411 * A303413 A303414 A303415

Keyword

nonn

Author

R. H. Hardin, Apr 23 2018

Status

approved