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Search: id:A056883
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A056883 Number of n-celled rotationally symmetric polyominoes without holes. +0
1
0, 0, 0, 1, 1, 5, 4, 18, 19, 72, 72, 268, 276, 1002, 1043, 3733, 3926, 14000, 14810, 52658, 55987, 199020, 212364, 754826, 807861, 2872926, 3082202, 10966333 (list; graph; listen)
OFFSET

1,6
LINKS

Tomas Oliveira e Silva, Enumeration of polyominoes

CROSSREFS

Sequence in context: A107984 A133178 A100791 this_sequence A006747 A108412 A133167

Adjacent sequences: A056880 A056881 A056882 this_sequence A056884 A056885 A056886

KEYWORD

nonn

AUTHOR

njas, Sep 03 2000

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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