A297801 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1s.

1, 381, 6215, 115773, 4340367, 123361724, 3420197908, 102189481612, 2993486726263, 87036084096735, 2550795725760992, 74669036575156557, 2183108544954393549, 63879977618932856370, 1869145222162376267997

Offset

1,2

Comments

Column 7 of A297802.

Links

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

Example

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

Crossrefs

Cf. A297802.

Sequence in context: A028682 A222163 A297543 * A201800 A172848 A214896

Adjacent sequences: A297798 A297799 A297800 * A297802 A297803 A297804

Keyword

nonn

Author

R. H. Hardin, Jan 06 2018

Status

approved