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Search: id:A131832
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| 1, 3, 3, 5, 3, 5, 7, 5, 5, 7, 9, 7, 11, 7, 9, 11, 9, 19, 19, 9, 11, 13, 11, 29, 39, 29, 11, 13, 15, 13, 41, 69, 69, 41, 13, 15, 17, 15, 55, 111, 139, 111, 55, 15, 17, 19, 17, 71, 167, 251, 251, 167, 71, 17, 19
(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 = A131833: (1, 6, 13, 24, 43, 78,...).
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FORMULA
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2*(A131810) - A000012 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
3, 3;
5, 3, 5;
7, 5, 5, 7;
9, 7, 11, 7, 9;
11, 9, 19, 19, 9, 11;
13, 11, 29, 39, 29, 11, 13;
15, 13, 41, 69, 69, 41, 13, 15;
...
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CROSSREFS
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Cf. A131830, A131833.
Adjacent sequences: A131829 A131830 A131831 this_sequence A131833 A131834 A131835
Sequence in context: A065507 A101772 A131919 this_sequence A078587 A143698 A033558
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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), Jul 20 2007
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