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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 1
4, 40, 364, 15309, 204555, 12855928, 216228179, 15688878354, 283068206603, 21098476001644, 385931333870127, 28983257047817242, 532423461945542041, 40098523259553204426, 737871045332271072405, 55677626294569362982028 (list; graph; refs; listen; history; text; internal format)
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

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Last modified October 15 07:46 EDT 2019. Contains 328026 sequences. (Running on oeis4.)