A167260 T(n,m) = Number of ways to partition an nXm grid into 4 connected equal-area regions.

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

Author

R. H. Hardin Oct 31 2009

Keywords

• nonn
• tabl

Links

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