A305639 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

16, 94, 255, 1516, 8734, 48567, 282463, 1774950, 11228442, 70910634, 457532212, 2961818801, 19161856034, 124734623018, 812517208743, 5292463879491, 34538146713972, 225412286656429, 1471173825589666, 9607289878561764

Offset

1,1

Comments

Column 5 of A305642.

Links

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

Example

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

Crossrefs

Cf. A305642.

Sequence in context: A108676 A304344 A316215 * A317033 A294433 A160750

Adjacent sequences: A305636 A305637 A305638 * A305640 A305641 A305642

Keyword

nonn

Author

R. H. Hardin, Jun 07 2018

Status

approved