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Search: id:A127739
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| A127739 |
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Triangle read by rows, in which row n contains the triangular number T(n) = A000217(n) repeated n times. |
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+0
2
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| 1, 3, 3, 6, 6, 6, 10, 10, 10, 10, 15, 15, 15, 15, 15, 21, 21, 21, 21, 21, 21, 28, 28, 28, 28, 28, 28, 28
(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 = A002411: (1, 6, 18, 40, 75,...)
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EXAMPLE
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First few rows of the triangle are:
1;
3, 3;
6, 6, 6;
10, 10, 10, 10;
15, 15, 15, 15, 15;
...
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CROSSREFS
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Cf. A000217, A002411.
Sequence in context: A072464 A160745 A105676 this_sequence A070318 A023842 A165885
Adjacent sequences: A127736 A127737 A127738 this_sequence A127740 A127741 A127742
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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), Jan 27 2007
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