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1, 2, 2, 4, 0, 3, 6, 5, 0, 4, 9, 0, 3, 0, 5, 12, 9, 4, 4, 0, 6, 16, 0, 3, 0, 5, 0, 7, 20, 14, 4, 9, 0, 6, 0, 8, 25, 0, 8, 0, 5, 0, 7, 0, 9, 30, 20, 4, 9, 6, 6, 0, 8, 0, 10
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Left border = A002620 starting (1, 2, 4, 6, 9, 12, 16, ...).
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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;
2, 2;
4, 0, 3;
6, 5, 0, 4;
9, 0, 3, 0, 5;
12, 9, 4, 4, 0, 6;
16, 0, 3, 0, 5, 0, 7;
...
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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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