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1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 4, 4, 1, 1, 1, 1, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 24, 24, 22, 15, 6, 6, 1, 1, 1, 1, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,7
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COMMENTS
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For rows >1, n-th row = all 1's iff n is prime.
Row sums = A156833: (1, 2, 3, 6, 5, 16, 7, 24, 24, 38, 11,...).
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LINKS
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FORMULA
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EXAMPLE
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First few rows of the triangle =
1;
1, 1;
1, 1, 1;
2, 2, 1, 1;
1, 1, 1, 1, 1;
5, 5, 3, 1, 1, 1;
1, 1, 1, 1, 1, 1, 1;
6, 6, 4, 4, 1, 1, 1, 1;
6, 6, 6, 1, 1, 1, 1, 1, 1;
9, 9, 5, 5, 5, 1, 1, 1, 1, 1;
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
24, 24, 22, 15, 6, 6, 1, 1, 1, 1, 1, 1;
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
13, 13, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1;
...
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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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