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A240517 Number of nX6 0..1 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..1 introduced in row major order 1
13, 42, 196, 1080, 6205, 37624, 231665, 1440880, 9082172, 57688194, 368247913, 2360899744, 15185317117, 97900171826, 632299574804, 4089240246144, 26472263944273, 171499150683304, 1111664911286921, 7208828328348392 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A240519

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A243028 A242544 A301539 * A074022 A232448 A157835

Adjacent sequences:  A240514 A240515 A240516 * A240518 A240519 A240520

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 06 2014

STATUS

approved

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Last modified November 14 09:49 EST 2018. Contains 317182 sequences. (Running on oeis4.)