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Search: id:A130267
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| 1, 2, 2, 2, 1, 3, 3, 3, 1, 4, 2, 1, 1, 1, 5, 4, 4, 4, 1, 1, 6, 2, 1, 1, 1, 1, 1, 7, 4, 4, 2, 5, 1, 1, 1, 8, 3, 2, 4, 1, 1, 1, 1, 1, 9, 4, 4, 2, 2, 6, 1, 1, 1, 1, 10
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A129235: (1, 4, 6, 11, 10, 20,...). Left border = A000005, d(n): (1, 2, 2, 3, 2, 4,...).
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FORMULA
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Inverse Moebius transform of A051340.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 2;
2, 1, 3;
3, 3, 1, 4;
2, 1, 1, 1, 5;
4, 4, 4, 1, 1, 6;
2, 1, 1, 1, 1, 1, 7;
...
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CROSSREFS
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Cf. A051340, A051731, A000005, A129235.
Sequence in context: A091222 A064659 A127953 this_sequence A060610 A017125 A063276
Adjacent sequences: A130264 A130265 A130266 this_sequence A130268 A130269 A130270
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), May 18 2007
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