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Search: id:A127447
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| A127447 |
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Triangle, row sums = n^2, left column = n*d(n). |
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+0
1
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| 1, 4, 0, 6, 3, 0, 12, 0, 4, 0, 10, 5, 5, 5, 0, 24, 6, 0, 0, 6, 0, 14, 7, 7, 7, 7, 7, 0, 32, 0, 16, 0, 8, 0, 8, 0, 27, 18, 0, 9, 0, 9, 9, 0, 40, 10, 20, 10, 0, 0, 10, 0, 10, 0
(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 = n^2, left column = n*d(n), A038040: (1, 4, 6, 12, 10, 24,...).
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FORMULA
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A127446 * A054521 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
4, 0;
6, 3, 0;
12, 0, 4, 0;
10, 5, 5, 5, 0;
24, 6, 0, 0, 6, 0;
14, 7, 7, 7, 7, 7, 0;
32, 0, 16, 0, 8 0, 8, 0;
...
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CROSSREFS
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Cf. A038040, A127446, A054521.
Sequence in context: A157721 A085968 A010637 this_sequence A096272 A021715 A075443
Adjacent sequences: A127444 A127445 A127446 this_sequence A127448 A127449 A127450
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KEYWORD
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nonn,tabl,uned
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 14 2007
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