A302003 Number of 6Xn 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

0, 89, 155, 530, 17800, 100176, 1366374, 12824770, 133115004, 1366157014, 13941336537, 143149041167, 1463519003210, 14995308550903, 153525291778069, 1572142108724428, 16098534802420026, 164847528194904576

Offset

1,2

Comments

Row 6 of A301999.

Links

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

Example

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

Crossrefs

Cf. A301999.

Sequence in context: A247114 A075589 A142031 * A094657 A142124 A044259

Adjacent sequences: A302000 A302001 A302002 * A302004 A302005 A302006

Keyword

nonn

Author

R. H. Hardin, Mar 30 2018

Status

approved