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Search: id:A131305
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| 1, 3, 1, 5, 5, 1, 7, 3, 3, 1, 9, 15, 5, 3, 1, 11, 13, 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, 43, 15, 13, 7, 9, 11, 5, 3, 1
(list; table; graph; listen)
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OFFSET
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0,2
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FORMULA
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2*A122288(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, 15, 5, 3, 1;
11, 13, 7, 5, 3, 1;
13, 11, 11, 9, 5, 3, 1;
...
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CROSSREFS
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Cf. A122288, A122203, A131302, A131303, A131304.
Sequence in context: A135184 A131304 A131302 this_sequence A131303 A131768 A084533
Adjacent sequences: A131302 A131303 A131304 this_sequence A131306 A131307 A131308
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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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