A222395 Number of nX1 0..2 arrays with exactly floor(nX1/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order

1, 0, 0, 3, 4, 8, 10, 50, 66, 216, 280, 1120, 1472, 5440, 7128, 27576, 36280, 138560, 182336, 704880, 929088, 3590400, 4735744, 18382208, 24268160, 94348800, 124638720, 485706240, 642037760, 2505943040, 3314228608, 12956458880

Offset

1,4

Comments

Column 1 of A222402

Links

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

Example

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

Crossrefs

Sequence in context: A072606 A098764 A105407 * A222269 A310011 A047458

Adjacent sequences: A222392 A222393 A222394 * A222396 A222397 A222398

Keyword

nonn

Author

R. H. Hardin Feb 18 2013

Status

approved