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A265461 Number of nX3 0..n+3-2 arrays with upper left zero and lower right n+3-2 and each element differing from its horizontal and antidiagonal neighbors by one or two. 1
1, 26, 550, 9808, 290140, 8526762, 226627855, 6429210362, 189020997503, 5485167198242, 160226445169831, 4738482482000394, 140498396836803614, 4175334634703864434, 124606393191706378406, 3729279022290970831400 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A265466.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A265466.

Sequence in context: A230247 A058461 A323492 * A257518 A283343 A160059

Adjacent sequences:  A265458 A265459 A265460 * A265462 A265463 A265464

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2015

STATUS

approved

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Last modified April 13 15:23 EDT 2021. Contains 342936 sequences. (Running on oeis4.)