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A205330 Number of (n+1)X4 0..2 arrays with the number of equal 2X2 subblock diagonal pairs and equal antidiagonal pairs differing from each horizontal or vertical neighbor, and new values 0..2 introduced in row major order 1
396, 4860, 63270, 827904, 10839696, 141909312, 1857980448, 24321964032, 318441384576, 4168528605696, 54577498150656, 714442081600512, 9354000126167040, 122447890915479552, 1603175593043457024 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A205335

LINKS

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

FORMULA

Empirical: a(n) = 192*a(n-2) -3844*a(n-4) +2656*a(n-5) +20720*a(n-6) -30528*a(n-7) +42944*a(n-8) -17408*a(n-9) -103424*a(n-10) +77824*a(n-11) -114688*a(n-12) +65536*a(n-13)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A205628 A203934 A203927 * A092720 A230732 A034621

Adjacent sequences:  A205327 A205328 A205329 * A205331 A205332 A205333

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 26 2012

STATUS

approved

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Last modified May 24 21:08 EDT 2022. Contains 354043 sequences. (Running on oeis4.)