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A165727
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Table T(k,n) read by antidiagonals: denominator of 1/min(n,k)^2 -1/max(n,k)^2 with T(0,n) = T(k,0) = 0.
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2
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0, 0, 0, 0, 1, 0, 0, 4, 4, 0, 0, 9, 1, 9, 0, 0, 16, 36, 36, 16, 0, 0, 25, 16, 1, 16, 25, 0, 0, 36, 100, 144, 144, 100, 36, 0, 0, 49, 9, 225, 1, 225, 9, 49, 0, 0, 64, 196, 12, 400, 400, 12, 196, 64, 0, 0, 81, 64, 441, 144, 1, 144, 441, 64, 81, 0, 0, 100, 324, 576, 784, 900, 900, 784, 576, 324, 100, 0
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OFFSET
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0,8
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COMMENTS
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A synopsis of the denominators of the transitions in the Rydberg-Ritz spectrum of hydrogenic atoms.
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LINKS
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EXAMPLE
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ... A000004
0, 1, 4, 9, 16, 25, 36, 49, 64, 81, ... A000290
0, 4, 1, 36, 16, 100, 9, 196, 64, 324, ... A061038
0, 9, 36, 1, 144, 225, 12, 441, 576, 81, ... A061040
0, 16, 16, 144, 1, 400, 144, 784, 64, 1296, ... A061042
0, 25, 100, 225, 400, 1, 900, 1225, 1600, 2025, ... A061044
0, 36, 9, 12, 144, 900, 1, 1764, 576, 324, ... A061046
0, 49, 196, 441, 784, 1225, 1764, 1, 3136, 3969, ... A061048
0, 64, 64, 576, 64, 1600, 576, 3136, 1, 5184, ... A061050
0, 81, 324, 81, 1296, 2025, 324, 3969, 5184, 1, ...
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MAPLE
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T:= (k, n)-> `if` (n=0 or k=0, 0, denom (1/min (n, k)^2 -1/max (n, k)^2)):
seq (seq (T (k, d-k), k=0..d), d=0..11);
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CROSSREFS
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Cf. A165441 (top row and left column removed)
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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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