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Search: id:A057423
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A057423 Diagonally symmetric n-celled polyominoes with 1 hole. +0
1
1, 0, 5, 4, 20, 18, 79, 84, 304, 332, 1149, 1309, 4312, 5005, 16136, 19049, 60347, 71979, 225867, 271781, 846667, 1025315 (list; graph; listen)
OFFSET

7,3
LINKS

Tomas Oliveira e Silva, Enumeration of polyominoes

CROSSREFS

Adjacent sequences: A057420 A057421 A057422 this_sequence A057424 A057425 A057426

Sequence in context: A133167 A133173 A070374 this_sequence A038246 A024067 A051138

KEYWORD

nonn

AUTHOR

njas, Sep 05 2000

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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