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A235066 Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1
4352, 22936, 126040, 727376, 4212792, 24652260, 144439680, 851021376, 5022415256, 29788907152, 177026662232, 1057318105828, 6328071686208, 38069139395704, 229503044264960, 1390863826264104, 8446497710589336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

Some solutions for n=3:

  4 0 4 0     4 5 4 5     2 3 5 3     2 1 2 3     5 3 4 5

  6 5 6 5     2 0 2 0     6 4 3 4     4 6 4 2     3 4 2 0

  1 3 1 3     0 1 0 1     5 0 2 0     3 2 3 4     5 3 4 5

  5 4 5 4     2 0 2 0     3 1 6 1     2 4 2 6     3 4 2 0

CROSSREFS

Column 3 of A235071.

Sequence in context: A048900 A294985 A252302 * A170786 A223378 A239193

Adjacent sequences:  A235063 A235064 A235065 * A235067 A235068 A235069

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 03 2014

STATUS

approved

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Last modified August 16 00:08 EDT 2022. Contains 356150 sequences. (Running on oeis4.)