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A109721
Number of different ways of selecting n nonempty cells in a 4 X 4 binary matrix, excluding all rotationally and symmetrically equivalent matrices.
0
1, 3, 21, 77, 252, 567, 1051, 1465, 1674, 1465, 1051, 567, 252, 77, 21, 3, 1
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Table of n, a(n) for n=0..16.
CROSSREFS
A row of A054252.
Sequence in context: A228317 A322228 A368046 * A067002 A110450 A176646
Adjacent sequences: A109718 A109719 A109720 * A109722 A109723 A109724
KEYWORD
nonn,fini,full
AUTHOR
Philippe Beaudoin, Aug 09 2005
STATUS
approved

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Last modified October 3 22:05 EDT 2024. Contains 376494 sequences.
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