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1, 2, 1, 1, 3, 1, 2, 2, 5, 1, 1, 5, 6, 6, 1, 2, 3, 14, 9, 8, 1, 1, 7, 14, 24, 16, 9, 1, 2, 4, 27, 30, 45, 21, 11, 1, 1, 9, 25, 62, 70, 66, 31, 12, 1, 2, 5, 44, 71, 147, 120, 104, 38, 14, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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Row sums = A117591: (1, 3, 5, 10, 19, 37, 72,...).
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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 are:
1;
2, 1;
1, 3, 1;
2, 2, 5, 1;
1, 5, 6, 6, 1;
2, 3, 14, 9, 8, 1;
1, 7, 14, 24, 16, 9, 1;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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The old definition of A131376 did not match its data, as Michel Marcus pointed out. The definition has been corrected here, keeping the data. The old definition with corrected data is now A309213. - N. J. A. Sloane, Aug 09 2019
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STATUS
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approved
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