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A235244 Number of (n+1)X(4+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1
16150, 41246, 108374, 338282, 1039502, 3521538, 11626526, 41097666, 141434374, 515121002, 1826965054, 6821774074, 24807303134, 94706874378, 352039395094, 1371301958834, 5197451865566, 20616621173346, 79485584533838 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235248

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..193

R. H. Hardin, Empirical recurrence of order 61

FORMULA

Empirical recurrence of order 61 (see link above)

EXAMPLE

Some solutions for n=3

..3..4..7..3..7....6..2..4..0..3....2..6..4..6..2....6..3..4..2..5

..0..7..4..6..4....5..7..3..5..2....3..1..5..1..3....4..7..2..6..3

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

..0..7..4..6..4....3..5..1..3..0....2..0..4..0..2....4..7..2..6..3

CROSSREFS

Sequence in context: A184405 A134120 A109566 * A236872 A031843 A031624

Adjacent sequences:  A235241 A235242 A235243 * A235245 A235246 A235247

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 05 2014

STATUS

approved

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Last modified July 24 18:34 EDT 2021. Contains 346273 sequences. (Running on oeis4.)