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A223007 Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 1
1, 7, 24, 169, 557, 4108, 14040, 104533, 365722, 2734747, 9710957, 72847186, 261226274, 1964845906, 7094565566, 53482760485, 194106792191, 1466023062226, 5342045681862, 40409217721285, 147724548119380, 1118883744204523 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A223012

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A153577 A009643 A108095 * A009646 A293489 A009650

Adjacent sequences:  A223004 A223005 A223006 * A223008 A223009 A223010

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 11 2013

STATUS

approved

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Last modified January 22 13:23 EST 2022. Contains 350481 sequences. (Running on oeis4.)