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A351356
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Triangle read by rows T(n,k): number of binary necklaces with n beads, k of them black, and at least two consecutive black beads.
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6
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0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 2, 1, 1, 0, 0, 1, 3, 3, 1, 1, 0, 0, 1, 4, 5, 3, 1, 1, 0, 0, 1, 5, 9, 7, 4, 1, 1, 0, 0, 1, 6, 13, 14, 10, 4, 1, 1, 0, 0, 1, 7, 19, 25, 22, 12, 5, 1, 1, 0, 0, 1, 8, 25, 41, 42, 30, 15, 5, 1, 1, 0, 0, 1, 9, 33, 63, 79, 66, 43, 19, 6, 1, 1, 0, 0, 1, 10, 41, 92, 131, 132, 99, 55, 22, 6, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,18
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LINKS
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EXAMPLE
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Triangle begins:
0;
0, 0;
0, 1, 0;
0, 1, 1, 0;
0, 1, 1, 1, 0;
0, 1, 2, 1, 1, 0;
0, 1, 3, 3, 1, 1, 0;
0, 1, 4, 5, 3, 1, 1, 0;
0, 1, 5, 9, 7, 4, 1, 1, 0;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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