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Search: id:A131819
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| A131819 |
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A131818 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums starting from the right of A131818. |
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+0
2
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| 1, 4, 2, 8, 5, 3, 13, 9, 7, 4, 19, 14, 12, 9, 5, 26, 20, 18, 15, 11, 6, 34, 27, 25, 22, 18, 13, 7, 43, 35, 33, 30, 26, 21, 15, 8, 53, 44, 42, 39, 35, 30, 24, 17, 9, 64, 54, 52, 49, 45, 40, 34, 27, 19, 10
(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 = A034856: (1, 4, 8, 13, 19, 26, 34,...). Row sums = A131820: (1, 6, 16, 33, 59, 96,...).
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EXAMPLE
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First few rows of the triangle are:
1;
4, 2;
8, 5, 3;
13, 9, 7, 4;
19, 14, 12, 9, 5;
26, 20, 18, 15, 11, 6;
34, 27, 25, 22, 18, 13, 7;
...
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CROSSREFS
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Cf. A131818, A000012, A131820, A034856.
Sequence in context: A066104 A143095 A141073 this_sequence A000727 A030181 A021879
Adjacent sequences: A131816 A131817 A131818 this_sequence A131820 A131821 A131822
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KEYWORD
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nonn,tabl,more
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 18 2007
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