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Search: id:A132751
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| 1, 3, 3, 5, 11, 5, 7, 23, 23, 7, 9, 39, 59, 39, 9, 11, 59, 119, 119, 59, 11, 13, 83, 209, 279, 209, 83, 13, 15, 111, 335, 559, 559, 335, 111, 15, 17, 143, 503, 1007, 1259, 1007, 503, 143, 17, 19, 179, 719, 1679, 2519, 2519, 1679, 719, 179, 19
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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row sums = A066524: (1, 6, 21, 60, 155, 378,...).
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FORMULA
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2*A003506 - 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, 11, 5;
7, 23, 23, 7;
9, 39, 59, 39, 9;
11, 59, 119, 119, 59, 11;
13, 83, 209, 279, 209, 83, 13;
15, 111, 335, 559, 559, 335, 111, 15;
...
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CROSSREFS
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Cf. A003506, A066524.
Adjacent sequences: A132748 A132749 A132750 this_sequence A132752 A132753 A132754
Sequence in context: A132775 A100886 A072337 this_sequence A032020 A084656 A073749
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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 28 2007
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