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Search: id:A135089
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| A135089 |
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T(n,k) = 5*binomial(n,k), n>0, (0<=k<=n). |
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+0
2
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| 1, 5, 5, 5, 10, 5, 5, 15, 15, 5, 5, 20, 30, 20, 5, 5, 25, 50, 50, 25, 5, 5, 30, 75, 100, 75, 30, 5, 5, 35, 105, 175, 175, 105, 35, 5, 5, 40, 140, 280, 350, 280, 140, 40, 5, 5, 45, 180, 420, 630, 630, 420, 180, 45, 55, 5, 5, 11, 5
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A020714 (except for the first term).
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FORMULA
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T(n,k) = 5*binomial (n,k), n>0, (0<=k<=n). 2*A134059 - A007318
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EXAMPLE
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First few rows of the triangle are:
1;
5, 5;
5, 10, 5;
5, 15, 15, 5;
5, 20, 30 20, 5;
5, 25, 50, 50, 25, 5;
5, 30, 75, 100, 75, 30, 5;
...
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CROSSREFS
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Cf. A134059, A020714.
Sequence in context: A159002 A127934 A087516 this_sequence A127310 A101597 A119991
Adjacent sequences: A135086 A135087 A135088 this_sequence A135090 A135091 A135092
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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 18 2007
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