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Search: id:A143354
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| 1, 4, -1, 4, 0, -1, 10, -4, 0, 0, 4, 0, 0, 0, -1, 16, -4, -4, 0, 0, 1, 4, 0, 0, 0, 0, 0, -1, 20, -10, 0, 0, 0, 0, 0, 0, 10, 0, -4, 0, 0, 0, 0, 0, 0, 16, -4, 0, 0, -4, 0, 0, 0, 0, 1, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, -16, -10, 0, 0, 4, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -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 border = A007426.
Right border = mu(n), A008683.
Row sums = A007425: (1, 3, 3, 6, 3, 9,...).
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FORMULA
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Triangle read by rows, (A051731)^4 * A128407, 1<=k<=n
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EXAMPLE
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First few rows of the triangle =
1;
4, -1;
4, 0, -1;
10, -4, 0, 0;
4, 0, 0, 0, 0, -1;
16, -4, -4, 0, 0, 1;
4, 0, 0, 0, 0, 0, -1;
10, -10, 0, 0, 0, 0, 0, 0;
...
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CROSSREFS
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Cf. A051731, A128407, A007425, A007426, A008663.
Sequence in context: A085471 A064221 A152890 this_sequence A106141 A082999 A010641
Adjacent sequences: A143351 A143352 A143353 this_sequence A143355 A143356 A143357
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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 10 2008
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