A222352 Number of n X n 0..1 arrays with no more than floor(n X n/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order

1, 1, 5, 73, 1054, 67171, 4355033, 1211912419, 345057233257, 408476458623284

Offset

1,3

Comments

Diagonal of A222360

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A108444 A155662 A182328 * A159509 A127167 A378409

Adjacent sequences: A222349 A222350 A222351 * A222353 A222354 A222355

Keyword

nonn

Author

R. H. Hardin Feb 16 2013

Status

approved