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A223006 Number of nX2 0..1 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 1
1, 4, 10, 34, 101, 331, 1044, 3406, 11008, 36039, 117866, 387709, 1276783, 4217763, 13954040, 46258390, 153562565, 510523621, 1699272620, 5662498639, 18888082230, 63062936820, 210730527620, 704727803329, 2358457291626, 7898146040191 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A223012

LINKS

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

EXAMPLE

All solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A140725 A005630 A100507 * A156700 A274479 A231524

Adjacent sequences:  A223003 A223004 A223005 * A223007 A223008 A223009

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 11 2013

STATUS

approved

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Last modified December 6 13:45 EST 2021. Contains 349563 sequences. (Running on oeis4.)