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A057426 Number of asymmetric n-celled polyominoes with 1 hole. 0

%I

%S 0,0,0,0,0,0,0,5,31,185,947,4564,21004,93833,410295,1765378,7504024,

%T 31591157,131982937,547971412,2263443059,9309302775,38149945673,

%U 155858903955,635066943350,2581736396181

%N Number of asymmetric n-celled polyominoes with 1 hole.

%H Tomás Oliveira e Silva, <a href="http://sweet.ua.pt/tos/animals.html">Enumeration of polyominoes</a>

%K nonn

%O 1,8

%A _N. J. A. Sloane_, Sep 05 2000

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Last modified January 29 10:34 EST 2020. Contains 331337 sequences. (Running on oeis4.)