A281836 Number of nX7 0..1 arrays with no element equal to more than four of its king-move neighbors and with new values introduced in order 0 sequentially upwards.

64, 7181, 174121, 5954670, 208837689, 7184856176, 249711414322, 8720904906157, 304343654274741, 10622958299884002, 370930580282054293, 12952520251947814234, 452283856657069177772, 15793443298614435564329

Offset

1,1

Comments

Column 7 of A281837.

Links

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

Example

Some solutions for n=3
..0..1..1..0..1..1..0. .0..1..1..1..0..1..1. .0..0..0..0..0..0..0
..0..1..0..0..1..0..1. .0..1..0..1..0..0..0. .1..1..1..0..1..1..0
..1..0..0..1..0..1..0. .1..0..0..1..0..1..1. .0..1..1..1..1..0..1

Crossrefs

Cf. A281837.

Sequence in context: A183243 A264075 A223198 * A299080 A299843 A299000

Adjacent sequences: A281833 A281834 A281835 * A281837 A281838 A281839

Keyword

nonn

Author

R. H. Hardin, Jan 31 2017

Status

approved