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Search: id:A127446
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| A127446 |
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Triangle, row sums = d(n)*n. |
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+0
2
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| 1, 2, 2, 3, 0, 3, 4, 4, 0, 4, 5, 0, 0, 0, 5, 6, 6, 6, 0, 0, 6, 7, 0, 0, 0, 0, 0, 7, 8, 8, 0, 8, 0, 0, 0, 8, 9, 0, 9, 0, 0, 0, 0, 0, 9, 10, 10, 0, 0, 10, 0, 0, 0, 0, 10
(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 = d(n) * n, A038040: (1, 4, 6, 12, 10, 24,...)
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FORMULA
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For row n, (n>1), replace the 1's of A051731 with n's.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 2;
3, 0, 3;
4, 4, 0, 4;
5, 0, 0, 0, 5;
6, 6, 6, 0, 0, 6;
7, 0, 0, 0, 0, 0, 7;
...
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CROSSREFS
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Cf. A038040, A051731.
Sequence in context: A125093 A103516 A129234 this_sequence A046157 A035167 A100890
Adjacent sequences: A127443 A127444 A127445 this_sequence A127447 A127448 A127449
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KEYWORD
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nonn,tabl,uned
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 14 2007
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