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Search: id:A134839
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| A134839 |
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Triangle, n-th row = first n terms in n-th row of an array formed by A051731 * A126988(transform). |
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+0
2
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| 1, 1, 3, 1, 2, 4, 1, 3, 3, 7, 1, 2, 3, 4, 6, 1, 3, 4, 6, 5, 12, 1, 2, 3, 4, 5, 6, 8, 1, 3, 3, 7, 5, 9, 7, 15, 1, 2, 4, 4, 5, 8, 7, 8, 13, 1, 3, 3, 6, 6, 9, 7, 12, 9, 18
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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Right border = sigma(n), A000203: (1, 3, 4, 7, 6, 12,...). Row sums = A007437: (1, 4, 7, 14, 16, 31, 29, 50,...).
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FORMULA
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Given the array formed by A051731 * A126988(transform), the triangle by rows = first n terms of n-th row of the array.
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EXAMPLE
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First few rows of the array are:
1, 2, 3, 4, 5, 6, 7,...
1, 3, 3, 6, 5, 9, 7,...
1, 2, 4, 4, 5, 8, 7,...
1, 3, 3, 7, 5, 9, 7,...
1, 2, 3, 4, 6, 6, 7,...
1, 3, 4, 6, 5, 12,7,...
...
First few rows of the triangle are:
1;
1, 3;
1, 2, 4;
1, 3, 3, 7;
1, 2, 3, 4, 6;
1, 3, 4, 6, 5, 12;
1, 2, 3, 4, 5, 6, 8;
...
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CROSSREFS
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Cf. A126988, A051731, A000203, A007437.
Sequence in context: A060477 A080890 A016468 this_sequence A077581 A130419 A083110
Adjacent sequences: A134836 A134837 A134838 this_sequence A134840 A134841 A134842
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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), Nov 12 2007
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