A299749 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

8, 88, 375, 1998, 11733, 64703, 358219, 2010841, 11248655, 62879257, 351925463, 1969646529, 11022486199, 61689352653, 345264233247, 1932370500069, 10815131485601, 60530599812081, 338780442090221, 1896102910584521

Offset

1,1

Comments

Column 4 of A299753.

Links

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

R. H. Hardin, Empirical recurrence of order 65

Formula

Empirical recurrence of order 65 (see link above)

Example

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

Crossrefs

Cf. A299753.

Sequence in context: A299848 A299004 A299671 * A300263 A367278 A030984

Adjacent sequences: A299746 A299747 A299748 * A299750 A299751 A299752

Keyword

nonn

Author

R. H. Hardin, Feb 18 2018

Status

approved