A222273 Number of nX5 0..3 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order

4, 40, 364, 15309, 204555, 12855928, 216228179, 15688878354, 283068206603, 21098476001644, 385931333870127, 28983257047817242, 532423461945542041, 40098523259553204426, 737871045332271072405, 55677626294569362982028

Offset

1,1

Comments

Column 5 of A222275

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

Some solutions for n=3
..0..0..0..0..0....0..1..0..0..0....0..1..0..0..0....0..0..1..1..1
..1..1..0..0..0....0..0..0..0..0....0..0..0..0..0....0..1..1..1..1
..1..1..0..0..0....0..2..0..0..0....0..0..0..0..2....1..0..1..1..1

Crossrefs

Sequence in context: A279574 A327675 A191681 * A220366 A220310 A246152

Adjacent sequences: A222270 A222271 A222272 * A222274 A222275 A222276

Keyword

nonn

Author

R. H. Hardin Feb 14 2013

Status

approved