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A089457
Number of n-celled polyominoes with exactly 5 holes.
4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 21, 573, 9140, 105417, 982767, 7919375, 57387444
OFFSET
1,20
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Joseph Myers, Nov 04 2003
STATUS
approved