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A234986 Number of (n+1)X(3+1) 0..5 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1
1640, 6908, 34608, 206556, 1303920, 8616068, 58209538, 400984904, 2799816642, 19780619488, 141031726484, 1013269795948, 7324436942360, 53208482346514, 388059888524356, 2839169810686872, 20824365934488100, 153044591416091762 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A234991

LINKS

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

R. H. Hardin, Empirical recurrence of order 91

FORMULA

Empirical recurrence of order 91 (see link above)

EXAMPLE

Some solutions for n=3

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

..2..1..0..1....4..0..1..0....1..0..3..4....2..3..4..3....1..2..1..0

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

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

CROSSREFS

Sequence in context: A239160 A206234 A158775 * A043464 A002434 A146300

Adjacent sequences:  A234983 A234984 A234985 * A234987 A234988 A234989

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 02 2014

STATUS

approved

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Last modified November 29 15:46 EST 2021. Contains 349416 sequences. (Running on oeis4.)