A297748 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.

13, 715, 9733, 187564, 5298077, 116064732, 2703029494, 67944280878, 1646896960337, 40234850505245, 997843605032884, 24626816271767234, 608328403396960778, 15071780241535979375, 373186362619468266665

Offset

1,1

Comments

Column 7 of A297749.

Links

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

Example

Some solutions for n=4
..0..0..1..1..1..1..1. .0..0..0..1..0..0..0. .0..1..0..1..1..0..0
..0..1..0..1..1..0..1. .1..1..1..0..0..1..0. .1..0..0..0..0..0..0
..0..1..0..1..1..0..0. .0..0..1..1..1..1..0. .0..0..0..0..0..0..0
..0..0..1..1..1..1..1. .0..0..0..1..1..0..1. .1..1..0..0..1..1..0

Crossrefs

Cf. A297749.

Sequence in context: A195555 A108223 A114355 * A086157 A033509 A262099

Adjacent sequences: A297745 A297746 A297747 * A297749 A297750 A297751

Keyword

nonn

Author

R. H. Hardin, Jan 05 2018

Status

approved