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A167260
T(n,m) = Number of ways to partition an nXm grid into 4 connected equal-area regions.
2
0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 5, 0, 5, 0, 0, 0, 23, 23, 0, 0, 0, 11, 0, 117, 0, 11, 0, 1, 0, 0, 501, 501, 0, 0, 1, 0, 25, 0, 2369, 0, 2369, 0, 25, 0, 0, 0, 1038, 9525, 0, 0, 9525, 1038, 0, 0, 0, 45, 0, 39731, 0, 442791, 0, 39731, 0, 45, 0, 1, 0, 0, 145415, 1596459, 0, 0, 1596459
OFFSET
1,12
LINKS
CROSSREFS
Sequence in context: A099645 A220412 A199092 * A137520 A010676 A071873
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Oct 31 2009
STATUS
approved