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A295216
Array T(m,n) read by antidiagonals: number of m X n rectangular patterns of precisely half black squares and half white squares that are ambiguously tilable with black and white colored dominoes, for m >= 1, n >= 1.
3
0, 0, 0, 0, 2, 0, 0, 6, 6, 0, 0, 22, 0, 22, 0, 0, 70, 174, 174, 70, 0, 0, 214, 0, 1934, 0, 214, 0, 0, 638, 4410, 16868, 16868, 4410, 638, 0
OFFSET
1,5
COMMENTS
See links.
EXAMPLE
Upper left corner of array:
0, 0, 0, 0, 0, ...
0, 2, 6, 22, ...
0, 6, 0, ...
0, 22, ...
0, ...
...
CROSSREFS
Cf. A295214 for all tilable patterns, A295215 for unambiguously tilable patterns, A099390 for domino tiling of a rectangle.
Sequence in context: A350791 A128613 A231063 * A230250 A137250 A329290
KEYWORD
nonn,tabl,more
AUTHOR
John Mason, Nov 17 2017
STATUS
approved