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A050174
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T(n,k) = S(n,k,k-2), 1<=k<=n-2, n >= 3, array S as in A050157.
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0
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1, 2, 2, 3, 5, 5, 4, 9, 14, 9, 5, 14, 28, 28, 14, 6, 20, 48, 62, 48, 20, 7, 27, 75, 117, 117, 75, 27, 8, 35, 110, 200, 242, 200, 110, 35, 9, 44, 154, 319, 451, 451, 319, 154, 44, 10, 54, 208, 483, 780, 912, 780, 483, 208, 54, 11, 65, 273, 702, 1274
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OFFSET
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3,2
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COMMENTS
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S(n,k,k) = C(n,k) for 1<=k<=n, n >= 1; cf. Pascal's triangle, A007318.
S(n,k,k-1), 1<=k<=n-1, n >= 2 is given by A014430.
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LINKS
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FORMULA
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T(n,k) = C(n,k) - n for k>1, and T(n, 1) = n - 2. - Andrei Asinowski, Jan 27 2016
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EXAMPLE
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Rows:
1;
2, 2;
3, 5, 5;
4, 9, 14, 9;
5, 14, 28, 28, 14;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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