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Search: id:A134061
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| 1, 3, 5, 3, 10, 5, 3, 15, 15, 5, 3, 20, 30, 20, 5, 3, 25, 50, 50, 25, 5, 3, 30, 75, 100, 75, 30, 5, 3, 35, 105, 175, 175, 105, 35, 5, 3, 40, 140, 280, 350, 280, 140, 40, 5, 3, 45, 180, 420, 630, 630, 420, 180, 45, 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 = A134062: (1, 8, 18, 38, 78, 158,...).
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FORMULA
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Triangle, A124928 + A134059 - A007318 as infinite lower triangular matrices. T(n,k) = 5*binomial(n,k) if k>0,(0<=k<=n), with leftmost column = (1,3,3,3,...).
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EXAMPLE
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First few rows of the triangle are:
1;
3, 5;
3, 10, 5;
3, 15, 15, 5;
3, 20, 30, 20, 5;
3, 25, 50, 50, 25, 5;
...
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CROSSREFS
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Cf. A124928, A134059, A134062.
Sequence in context: A070554 A076842 A077862 this_sequence A105574 A105562 A089730
Adjacent sequences: A134058 A134059 A134060 this_sequence A134062 A134063 A134064
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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), Oct 05 2007
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