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A130296
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Triangle read by rows, reversals of A051340.
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19
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1, 2, 1, 3, 1, 1, 4, 1, 1, 1, 5, 1, 1, 1, 1, 6, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 1, 1, 1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Row sums = (1, 3, 5,...). A130296^2 = A130297.
a(n) = A004201(n) - A004201(n-1) for n>1. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 16 2008
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FORMULA
| Reversal of A051340. By rows, "n" followed by (n-1) 1's. (1,2,3...) in the left border, all 1's in other columns.
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EXAMPLE
| First few rows of the triangle are:
1;
2, 1;
3, 1, 1;
4, 1, 1, 1;
5, 1, 1, 1, 1;
...
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CROSSREFS
| Cf. A051340, A130297.
Sequence in context: A088742 A144220 A156826 * A126705 A113924 A178340
Adjacent sequences: A130293 A130294 A130295 * A130297 A130298 A130299
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), May 20 2007
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EXTENSIONS
| More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 16 2008
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