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Search: id:A130296
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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; listen)
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OFFSET
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1,2
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COMMENT
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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
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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
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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
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Cf. A051340, A130297.
Adjacent sequences: A130293 A130294 A130295 this_sequence A130297 A130298 A130299
Sequence in context: A006346 A088742 A144220 this_sequence A126705 A113924 A084296
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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), May 20 2007
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EXTENSIONS
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More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 16 2008
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