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Search: id:A135539
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| 1, 2, 1, 2, 1, 1, 3, 2, 1, 1, 2, 1, 1, 1, 1, 4, 3, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 4, 3, 2, 2, 1, 1, 1, 1, 3, 2, 2, 1, 1, 1, 1, 1, 1, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8, 15,...). Left border = d(n), A000005: (1, 2, 2, 3, 2, 4, 2,...).
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FORMULA
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A051731 * A000012. Triangle read by rows, partial sums of A051731 starting from the right.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
2, 1, 1;
3, 2, 1, 1;
2, 1, 1, 1, 1;
4, 3, 2, 1, 1, 1;
2, 1, 1, 1, 1, 1, 1;
4, 3, 2, 2, 1, 1, 1, 1;
3, 2, 2, 1, 1, 1, 1, 1, 1;
...
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CROSSREFS
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Cf. A051731, A000203, A000005.
Adjacent sequences: A135536 A135537 A135538 this_sequence A135540 A135541 A135542
Sequence in context: A008289 A116679 A146290 this_sequence A129264 A135840 A131332
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 30 2007
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