A281539 Number of nX7 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

34, 16368, 245037, 385284, 610493, 1066920, 1935368, 3474958, 6171868, 11158871, 20395467, 37090446, 66559412, 117785326, 205663182, 355907155, 612385903, 1050975150, 1799990677, 3077499241, 5246920963, 8917248681, 15096933611

Offset

1,1

Comments

Column 7 of A281540.

Links

R. H. Hardin, Table of n, a(n) for n = 1..25

Example

Some solutions for n=2
..0..1..0..2..1..0..0. .0..0..0..1..0..0..1. .0..1..0..0..2..1..2
..0..1..0..2..0..1..1. .1..2..1..2..1..2..1. .1..0..2..1..2..1..2

Crossrefs

Cf. A281540.

Sequence in context: A214368 A328293 A220870 * A223040 A200461 A287052

Adjacent sequences: A281536 A281537 A281538 * A281540 A281541 A281542

Keyword

nonn

Author

R. H. Hardin, Jan 23 2017

Status

approved