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A205747 Number of (n+1)X3 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order 1
48, 284, 1936, 12384, 82992, 542718, 3602578, 23691830, 156738676, 1033041690, 6824741078, 45020426618, 297261797768, 1961609742846, 12949334504402, 85463493135422, 564128280317020, 3723357621326818, 24576331604189646 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A205753

LINKS

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

FORMULA

Empirical: a(n) = 33*a(n-2) +76*a(n-3) +13*a(n-4) -284*a(n-5) -597*a(n-6) +484*a(n-7) +1376*a(n-8) +36*a(n-9) -752*a(n-10) -256*a(n-11) for n>12

EXAMPLE

Some solutions for n=4

..0..1..2....0..0..0....0..0..1....0..1..0....0..0..0....0..0..0....0..0..1

..0..1..2....0..1..0....2..0..1....0..0..0....0..0..0....1..2..1....0..1..1

..1..2..1....1..2..1....0..1..0....1..2..1....0..1..0....1..1..1....2..2..0

..2..2..1....2..2..1....1..1..0....0..1..2....1..2..1....1..1..1....1..2..0

..1..0..0....1..0..0....0..2..2....0..1..1....2..2..1....1..2..1....2..1..2

CROSSREFS

Sequence in context: A115056 A001337 A259993 * A173121 A281234 A215262

Adjacent sequences:  A205744 A205745 A205746 * A205748 A205749 A205750

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 30 2012

STATUS

approved

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Last modified January 21 23:33 EST 2022. Contains 350481 sequences. (Running on oeis4.)