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Search: id:A143309
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| 1, 3, 2, 5, 3, 3, 8, 6, 4, 4, 9, 5, 5, 5, 5, 15, 13, 9, 6, 6, 6, 13, 7, 7, 7, 7, 7, 7, 20, 16, 12, 12, 8, 8, 8, 8, 21, 15, 15, 9, 9, 9, 9, 9, 9, 27, 23, 15, 15, 15, 10, 10, 10, 10, 10, 10, 21, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 40, 36, 32, 26, 18, 18, 12, 12, 12, 12, 12, 12
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A069097: (1, 5, 11, 22, 29, 55,...).
Left border = A018804: (1, 3, 5, 8, 9, 15,...).
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FORMULA
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Mobius transform of triangle A143308
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EXAMPLE
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First few rows of the triangle =
1;
3, 2;
5, 3, 3;
8, 6, 4, 4;
9, 5, 5, 5, 5;
15, 13, 9, 6, 6, 6;
13, 7, 7, 7, 7, 7, 7;
...
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CROSSREFS
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Cf. A143308, A018804, A069097.
Sequence in context: A103340 A106615 A130299 this_sequence A155981 A057958 A057953
Adjacent sequences: A143306 A143307 A143308 this_sequence A143310 A143311 A143312
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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), Aug 06 2008
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