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Number of n-celled polyominoes with exactly 5 holes.
4

%I #4 Apr 07 2015 10:48:39

%S 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,21,573,9140,105417,982767,

%T 7919375,57387444

%N Number of n-celled polyominoes with exactly 5 holes.

%H Tomás Oliveira e Silva, <a href="http://www.ieeta.pt/%7Etos/animals/a44.html">Animal enumerations on the {4,4} Euclidean tiling</a>

%Y Cf. A001419, A057418, A089454, A089455, A089456, A089458.

%K hard,nonn

%O 1,20

%A _Joseph Myers_, Nov 04 2003