A222699 - OEIS

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A222699

Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order

4, 16, 62, 359, 2002, 12101, 73901, 460669, 2883822, 18178638, 115115070, 732065684, 4669781881, 29871691523, 191531922013, 1230676513191, 7922040025606, 51078922635855, 329820795489509, 2132486033946106

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 4 of A222703

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..181

EXAMPLE

Some solutions for n=3

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1

..0..0..0..1....0..0..0..1....0..0..0..0....0..0..1..0....0..0..1..1

..0..0..1..1....0..0..0..1....0..0..0..0....0..0..0..1....0..0..1..1