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Search: id:A131304
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| 1, 3, 1, 5, 5, 1, 7, 3, 3, 1, 9, 13, 5, 3, 1, 11, 15, 7, 5, 3, 1, 13, 11, 11, 9, 5, 3, 1, 15, 7, 9, 7, 9, 5, 3, 1, 17, 9, 13, 11, 11, 11, 5, 3, 1, 19, 33, 15, 137, 9, 11, 5, 3, 1
(list; table; graph; listen)
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OFFSET
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1,2
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FORMULA
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2*A089840(deleting the right border of zeros) - A000012
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EXAMPLE
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First few rows of the triangle are:
1;
3, 1;
5, 5, 1;
7, 3, 3, 1;
9, 13, 5, 3, 1;
11, 15, 7, 5, 3, 1;
13, 11, 11 9, 5, 3, 1;
...
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CROSSREFS
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Cf. A089840, A131302, A131303, A122203, A122204.
Adjacent sequences: A131301 A131302 A131303 this_sequence A131305 A131306 A131307
Sequence in context: A094648 A096975 A135184 this_sequence A131302 A131305 A131303
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 27 2007
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