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1, 3, 1, 6, 1, 1, 11, 2, 1, 1, 16, 2, 1, 1, 1, 25, 3, 2, 1, 1, 1, 32, 3, 2, 1, 1, 1, 1, 44, 4, 2, 2, 1, 1, 1, 1, 55, 4, 3, 2, 1, 1, 1, 1, 1, 70, 5, 3, 2, 2, 1, 1, 1, 1, 1, 81, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 104, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1
(list;
table;
graph;
refs;
listen;
history;
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OFFSET
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1,2
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COMMENTS
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Row sums = A024916: (1, 4, 8, 15, 21, 33, 41,...).
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LINKS
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Table of n, a(n) for n=1..78.
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FORMULA
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Triangle read by rows, A000012 * A158902; where the A000012 multiplier takes jcolumn sums of triangle A158902 starting from the top.
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EXAMPLE
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First few rows of the triangle =
1;
3, 1;
6, 1, 1;
11, 2, 1, 1;
16, 2, 1, 1, 1;
25, 3, 2, 1, 1, 1;
32, 3, 2, 1, 1, 1, 1;
44, 4, 2, 2, 1, 1, 1, 1;
55, 4, 3, 2, 1, 1, 1, 1, 1;
70, 5, 3, 2, 2, 1, 1, 1, 1, 1;
81, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1;
104, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1;
117, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1;
138, 7, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1;
...
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CROSSREFS
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Cf. A158902, A024916
Sequence in context: A130541 A034839 A089732 * A098076 A171852 A010287
Adjacent sequences: A158902 A158903 A158904 * A158906 A158907 A158908
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson & Mats Granvik, Mar 29 2009
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STATUS
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approved
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