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Search: id:A128715
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| 1, 2, 2, 3, 1, 3, 4, 2, 2, 4, 5, 3, 5, 3, 5, 6, 4, 9, 9, 4, 6, 7, 5, 14, 19, 14, 5, 7, 8, 6, 20, 34, 34, 20, 6, 8, 9, 7, 27, 55, 69, 55, 27, 7, 9, 10, 8, 35, 83, 125, 125, 83, 35, 8, 10
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums are (apart from the first row) given by A005126.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 2;
3, 1, 3;
4, 2, 2, 4;
5, 3, 5, 3, 5;
6, 4, 9, 9, 4, 6;
7, 5, 14, 19, 14, 5, 7;
8, 6, 20, 34, 34, 20, 6, 8;
9, 7, 27, 55, 69, 55, 27, 7, 9;
...
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CROSSREFS
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Cf. A131830, A103451, A000012, A005126.
Sequence in context: A135621 A077268 A131821 this_sequence A113881 A072030 A080045
Adjacent sequences: A128712 A128713 A128714 this_sequence A128716 A128717 A128718
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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), Aug 09 2007
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