A222513 - OEIS

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A222513

Number of 5Xn 0..1 arrays with exactly floor(5Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

0, 8, 87, 497, 2066, 17674, 81537, 800040, 3877847, 39636760, 197167116, 2044535652, 10266459303, 107207411996, 541084890084, 5674279900642, 28738733251005, 302282496834886, 1535249200603440, 16185756541061498

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

OFFSET

1,2

COMMENTS

Row 5 of A222509

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..42

EXAMPLE

Some solutions for n=3

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

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

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