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A240125
Number of inequivalent ways to cut an n X n square into squares with integer sides, such that the dissection has one reflective symmetry in an axis parallel to a side, but no other symmetries.
3
0, 0, 0, 3, 5, 138, 201, 13032, 19990, 4095612, 7026883, 4451051502
OFFSET
1,4
EXAMPLE
The three dissections for n=4, with the axis horizontal:
--------- --------- ---------
| | | | | | | | | | | | |
| ----- | ----- ---------
| | | | | | | | | | |
--------- ----- | | -----
| | | | | | | | | | |
| ----- | ----- ---------
| | | | | | | | | | | | |
--------- --------- ---------
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ed Wynn, Apr 01 2014
STATUS
approved