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A167260 T(n,m) = Number of ways to partition an nXm grid into 4 connected equal-area regions. 1
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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,12

LINKS

R. H. Hardin, Table of n, a(n) for n=1..83

CROSSREFS

Sequence in context: A099645 A220412 A199092 * A137520 A010676 A071873

Adjacent sequences:  A167257 A167258 A167259 * A167261 A167262 A167263

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Oct 31 2009

STATUS

approved

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Last modified January 26 16:03 EST 2022. Contains 350599 sequences. (Running on oeis4.)