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1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, -1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, -1, 0, 0, 0, 1, 1, 1, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Row sums = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6, 4, 6, 4,...).
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LINKS
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Table of n, a(n) for n=1..55.
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FORMULA
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A054525 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums of A054525 (the Mobius transform) terms starting from the right.
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EXAMPLE
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First few rows of the triangle are:
1;
0, 1;
0, 1, 1;
0, 0, 1, 1;
0, 1, 1, 1, 1;
0, -1, 0, 1, 1, 1;
0, 1, 1, 1, 1, 1, 1;
0, 0, 0, 0, 1, 1, 1, 1;
0, 0, 0, 1, 1, 1, 1, 1, 1;
0, -1, 0, 0, 0, 1, 1, 1, 1, 1;
...
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CROSSREFS
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Cf. A054525.
Sequence in context: A101688 A155031 A155029 * A318962 A128430 A176330
Adjacent sequences: A134537 A134538 A134539 * A134541 A134542 A134543
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson, Oct 31 2007
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STATUS
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approved
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