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1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 0, 0, 1, 1, 2, 2, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 2, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 2, 1, 0, 1, 1, 0, 0, 0, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Row sums = A114003: (1, 3, 3, 5, 3, 7, 3, 7, 5, 7,...)
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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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A051731 * A097806, (inverse Moebius transform of A097806).
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
1, 1, 1;
2, 1, 1, 1;
1, 0, 0, 1, 1;
2, 2, 1, 0, 1, 1;
...
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CROSSREFS
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Cf. A051731, A097806, A114003.
Sequence in context: A176820 A016024 A093518 * A025450 A139128 A106752
Adjacent sequences: A128181 A128182 A128183 * A128185 A128186 A128187
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson, Feb 17 2007
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STATUS
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approved
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