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A089456 Number of n-celled polyominoes with exactly 4 holes. 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 179, 2509, 25609, 214932, 1578984, 10536260, 65411645, 383981499, 2156114468 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,17
LINKS
CROSSREFS
Sequence in context: A001596 A221115 A159326 * A298995 A299742 A299662
KEYWORD
hard,nonn
AUTHOR
Joseph Myers, Nov 04 2003
STATUS
approved

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)