A282373 Number of nX4 0..1 arrays with no 1 equal to more than four of its king-move neighbors, with the exception of exactly two elements.

0, 6, 309, 6244, 119390, 2131096, 36258678, 594236950, 9502175342, 149094022594, 2303609997650, 35156424933146, 531063422607186, 7952651367000598, 118206136820451322, 1745636429854447262, 25632755261397583238

Offset

1,2

Comments

Column 4 of A282377.

Links

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

R. H. Hardin, Empirical recurrence of order 54

Formula

Empirical recurrence of order 54 (see link above)

Example

Some solutions for n=4
..1..0..1..1. .0..1..0..1. .1..0..0..0. .0..0..1..1. .1..1..0..0
..1..0..0..1. .1..1..1..1. .1..0..1..1. .1..1..0..1. .0..1..1..0
..1..1..1..0. .1..0..1..0. .0..1..1..0. .0..1..1..1. .1..0..1..1
..1..1..1..0. .0..0..0..0. .0..1..1..1. .1..1..1..0. .0..0..1..1

Crossrefs

Cf. A282377.

Sequence in context: A104003 A280215 A015103 * A123181 A281932 A074656

Adjacent sequences: A282370 A282371 A282372 * A282374 A282375 A282376

Keyword

nonn

Author

R. H. Hardin, Feb 13 2017

Status

approved