A281324 Number of nX6 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

28, 22342, 5192104, 977717308, 166805996158, 26899223667928, 4181821443113978, 633606104886468360, 94186568347536816634, 13796519486189257667162, 1997432551613036750016196, 286445189090932989849214302

Offset

1,1

Comments

Column 6 of A281326.

Links

R. H. Hardin, Table of n, a(n) for n = 1..57

Example

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

Crossrefs

Cf. A281326.

Sequence in context: A221897 A280283 A221928 * A370364 A159439 A270070

Adjacent sequences: A281321 A281322 A281323 * A281325 A281326 A281327

Keyword

nonn

Author

R. H. Hardin, Jan 20 2017

Status

approved