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Search: id:A133115
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| 1, 3, 1, 7, 3, 1, 11, 7, 7, 1, 17, 11, 21, 7, 1, 23, 17, 47, 21, 11, 1, 31, 23, 91, 47, 43, 11, 1, 39, 31, 159, 91, 123, 43, 15, 1, 49, 39, 259, 159, 295, 123, 73, 15, 1, 49, 49, 399, 259, 627, 295, 255, 73, 19, 1
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Left column = A047838: (1, 3, 7, 11, 17, 23,...). Row sums = A000295: (1, 4, 11, 26, 57,...).
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FORMULA
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2*A133113 - A000012 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
3, 1;
7, 3, 1;
11, 7, 7, 1;
17, 11, 21, 7, 1;
23, 17, 47, 21, 11, 1;
31, 23, 91, 47, 43, 11, 1;
...
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CROSSREFS
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Cf. A133113, A047838, A000295.
Adjacent sequences: A133112 A133113 A133114 this_sequence A133116 A133117 A133118
Sequence in context: A065265 A132885 A059090 this_sequence A104797 A130330 A050227
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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), Sep 14 2007
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