A302385 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 361, 16451, 514655, 20993054, 849467774, 34271733937, 1383359844850, 55869034107773, 2256277862917399, 91119808168300632, 3679882775189443109, 148612776964178660961, 6001755395115442008533, 242382043501326104374522

Offset

1,2

Comments

Row 6 of A302381.

Links

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

Example

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

Crossrefs

Cf. A302381.

Sequence in context: A253675 A206249 A231996 * A303106 A186869 A185612

Adjacent sequences: A302382 A302383 A302384 * A302386 A302387 A302388

Keyword

nonn

Author

R. H. Hardin, Apr 06 2018

Status

approved