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Search: id:A127173
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| 1, -2, 1, -2, 0, 1, 1, -2, 0, 1, 4, -2, -2, 0, 0, 1, -2, 0, 0, 0, 0, 0, 1, 0, 1, 0, -2, 0, 0, 0, 1, 1, 0, -2, 0, 0, 0, 0, 0, 1, 4, -2, 0, 0, -2, 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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A127173 * [1, 1, 1,...] = mu(n), A008683: (1, -1, -1, 0, -1, -1, 0, 0, 1,...). A127173 * (1, 2, 3,...] = A007431 A127173 * mu(n) = A007428. All columns = A007427: (1, -2, -2, 1, -2, 4, -1, 0, 1, 4,...) interspersed with (k-1) zeros which are not in A007427.
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FORMULA
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Square of A054525 A007427 (1, -2, -2, 1, -2, 4, -2, 0, 1,...) in every column k, interspersed with (k-1) zeros.
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EXAMPLE
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First few rows of the triangle are:
1;
-2, 1;
-2, 0, 1;
1, -2, 0, 1;
-2, 0, 0, 0, 1;
4, -2, 02, 0, 0, 1;
-2, 0, 0, 0, 0, 0, 1;
0, 1, 0, -2, 0, 0, 0, 1;
1, 0, -2, 0, 0, 0, 0, 0, 1;
4, -2, 0, 0, -2, 0, 0, 0, 0, 1;
...
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CROSSREFS
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Cf. A007427, A054525, A008683, A007431, A007428.
Sequence in context: A104607 A120728 A092149 this_sequence A035160 A027414 A140083
Adjacent sequences: A127170 A127171 A127172 this_sequence A127174 A127175 A127176
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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), Jan 06 2007
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