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A118013
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Triangle read by rows: T(n,k) = floor(n^2/k), 1<=k<=n.
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10
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1, 4, 2, 9, 4, 3, 16, 8, 5, 4, 25, 12, 8, 6, 5, 36, 18, 12, 9, 7, 6, 49, 24, 16, 12, 9, 8, 7, 64, 32, 21, 16, 12, 10, 9, 8, 81, 40, 27, 20, 16, 13, 11, 10, 9, 100, 50, 33, 25, 20, 16, 14, 12, 11, 10, 121, 60, 40, 30, 24, 20, 17, 15, 13, 12, 11, 144, 72, 48, 36, 28, 24, 20, 18, 16, 14
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OFFSET
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1,2
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COMMENTS
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central terms give A008574: T(2*k-1,k) = 4*(k-1)+0^(k-1);
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LINKS
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EXAMPLE
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Triangle begins:
1,
4, 2,
9, 4, 3,
16, 8, 5, 4,
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PROG
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(Haskell)
a118013 n k = a118013_tabl !! (n-1) !! (k-1)
a118013_row n = map (div (n^2)) [1..n]
a118013_tabl = map a118013_row [1..]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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