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1, 1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 4, 11, 7, 1, 1, 5, 26, 32, 11, 1, 1, 6, 57, 122, 76, 16, 1, 1, 7, 120, 423, 426, 156, 22, 1, 1, 8, 247, 1389, 2127, 1206, 288, 29, 1, 1, 9, 502, 4414, 9897, 8157, 2934, 491, 37, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,5
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COMMENTS
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Row sums = A005001 starting (1, 2, 4, 9, 24, 76, 279, ...).
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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, 2, 1;
1, 3, 4, 1;
1, 4, 11, 7, 1;
1, 5, 26, 32, 11, 1;
1, 6, 57, 122, 76, 16, 1;
1, 7, 120, 423, 426, 156, 22, 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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STATUS
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approved
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