A299875 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 29, 41, 125, 585, 1974, 6542, 24545, 89192, 314259, 1128245, 4079503, 14634597, 52444291, 188594973, 678001937, 2434026544, 8742984292, 31418755932, 112865079546, 405419489351, 1456549048305, 5232786086738, 18798220721187

Offset

1,1

Comments

Column 4 of A299879.

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above)

Example

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

Crossrefs

Cf. A299879.

Sequence in context: A115107 A298217 A299093 * A035339 A034167 A299011

Adjacent sequences: A299872 A299873 A299874 * A299876 A299877 A299878

Keyword

nonn

Author

R. H. Hardin, Feb 21 2018

Status

approved