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1, 2, 4, 2, 8, 4, 2, 12, 12, 4, 2, 16, 24, 16, 4, 2, 20, 40, 40, 20, 4, 2, 24, 60, 80, 60, 24, 4, 2, 28, 84, 140, 140, 84, 28, 4, 2, 32, 112, 224, 280, 224, 112, 32, 42, 36, 144, 336, 504, 504, 336, 144, 36, 4
(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 = A134067: (1, 6, 14, 30, 62, 126, ...).
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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, 4;
2, 8, 4;
2, 12, 12, 4;
2, 16, 24, 16, 4;
2, 20, 40, 40, 20, 4;
...
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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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