A299563 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

2, 52, 222, 965, 4342, 20044, 91193, 417122, 1909312, 8734151, 39947749, 182768322, 836122108, 3824998985, 17498582229, 80052385791, 366221432011, 1675383094458, 7664515419348, 35063486595790, 160407814702600, 733830892882346

Offset

1,1

Comments

Column 4 of A299567.

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..1..1. .0..0..0..0. .0..1..1..1. .0..1..1..1. .0..1..1..1
..0..1..1..1. .0..1..1..1. .0..1..1..1. .0..1..1..1. .0..1..1..1
..0..1..1..1. .0..1..1..1. .0..1..1..1. .0..1..1..1. .0..1..1..1
..0..1..1..1. .0..1..1..1. .1..0..1..1. .0..0..0..0. .0..1..1..1
..0..0..0..0. .0..1..1..1. .0..1..0..0. .1..1..1..0. .0..1..1..1

Crossrefs

Cf. A299567.

Sequence in context: A297947 A298556 A298766 * A298385 A299303 A299461

Adjacent sequences: A299560 A299561 A299562 * A299564 A299565 A299566

Keyword

nonn

Author

R. H. Hardin, Feb 12 2018

Status

approved