A299461 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

2, 52, 226, 1013, 5294, 27639, 139226, 713421, 3674765, 18853673, 96786807, 497418193, 2555599511, 13129374671, 67461650707, 346631157067, 1781036709459, 9151338992559, 47021631140929, 241607368725137, 1241433013500699

Offset

1,1

Comments

Column 4 of A299465.

Links

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

R. H. Hardin, Empirical recurrence of order 69

Formula

Empirical recurrence of order 69 (see link above)

Example

Some solutions for n=6
..0..0..1..0. .0..1..0..0. .0..0..0..1. .0..1..0..1. .0..0..1..1
..1..1..1..0. .0..1..1..1. .0..0..0..1. .1..0..1..1. .1..0..0..0
..0..0..0..0. .1..1..1..1. .0..0..0..1. .0..0..0..0. .1..0..0..0
..0..1..1..1. .0..1..1..1. .0..0..0..0. .1..1..1..1. .1..0..0..0
..0..1..1..1. .0..1..0..0. .0..0..0..1. .1..1..1..1. .0..0..0..0
..0..1..1..1. .0..0..1..1. .1..1..1..0. .1..1..1..1. .0..1..1..1

Crossrefs

Cf. A299465.

Sequence in context: A299563 A298385 A299303 * A300104 A034311 A053317

Adjacent sequences: A299458 A299459 A299460 * A299462 A299463 A299464

Keyword

nonn

Author

R. H. Hardin, Feb 10 2018

Status

approved