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Search: id:A143319
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| 1, 3, -1, 4, -1, -1, 7, -4, 0, 0, 6, -1, -1, -1, -1, 12, -8, -3, 1, 1, 1, 8, -1, -1, -1, -1, -1, -1, 15, -11, 0, 0, 0, 0, 0, 0, 13, -5, -5, 0, 0, 0, 0, 0, 0, 18, -10, -3, -3, -3, 1, 1, 1, 1, 1, 12, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 28, -27, -4, 4, 4, 4, 0, 0, 0, 0, 0, 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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Left border = sigma(n), A000203.
Right border = mu(n) A008683.
Row sums = d(n), A000005.
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FORMULA
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Triangle read by rows, A051731 * A143318; 1<=k<=n
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EXAMPLE
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First few rows of the triangle =
1;
3, -1;
4, -1, -1;
7, -4, 0, 0;
6, -1, -1, -1, -1;
12, -8, -3, -1, -1, -1;
8, -1, -1, -1, -1, -1, -1;
...
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CROSSREFS
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Cf. A143318, A000005, A008683, A000203, A051731.
Sequence in context: A130314 A127057 A143355 this_sequence A078011 A010285 A159878
Adjacent sequences: A143316 A143317 A143318 this_sequence A143320 A143321 A143322
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 07 2008
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