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Search: id:A143310
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| 1, 3, 2, 6, 2, 3, 10, 6, 3, 4, 15, 6, 3, 4, 5, 15, 6, 3, 4, 5, 21, 12, 9, 4, 5, 6, 28, 12, 9, 4, 5, 6, 7, 36, 20, 9, 12, 5, 6, 7, 8, 45, 20, 18, 12, 5, 6, 7, 8, 9, 55, 30, 18, 12, 15, 6, 7, 8, 9, 10, 66, 30, 18, 12, 15, 6, 7, 8, 9, 10, 11, 78, 42, 30, 24, 15, 18, 7, 8, 9, 10, 11, 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 = A143127: (1, 5, 11, 23, 33, 57, 71,...).
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FORMULA
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Triangle read by rows, A000012 * A127446, 1<=k<=n
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EXAMPLE
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First few rows of the triangle =
1;
3, 2;
6, 2, 3;
10, 6, 3, 4;
15, 6, 3, 4, 5;
21, 12, 9, 4, 5, 6;
28, 12, 9, 4, 5, 6, 7;
36, 20, 9, 12, 5, 6, 7, 8;
...
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CROSSREFS
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Cf. A127446, A143127.
Sequence in context: A019761 A133519 A135223 this_sequence A131897 A061187 A021758
Adjacent sequences: A143307 A143308 A143309 this_sequence A143311 A143312 A143313
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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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