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A181759 Denominators of an extended Rydberg-Ritz spectrum of hydrogen atom: 1/9 -1/n^2. 1
1, 36, 9, 0, 9, 36, 1, 144, 225, 12, 441, 576, 81, 900, 1089, 48, 1521, 1764, 75, 2304, 2601, 324, 3249, 3600, 147, 4356, 4761, 64, 5625, 6084, 729, 7056, 7569, 100, 8649, 9216, 363, 10404, 11025 (list; graph; refs; listen; history; text; internal format)
OFFSET
-3,2
COMMENTS
Companion to A171709. The fractional antispectrum is 0, -5/36, -8/9, -1, -8/9, -5/36, before ( (A061039/A061040) =0, 7/144, ). For case n=0 , -1 must be taken. Paschen case: see A174413.
LINKS
FORMULA
a(n) = A061040(n), n>=3.
CROSSREFS
Cf. A061040.
Sequence in context: A020340 A255868 A289138 * A280679 A343921 A097488
KEYWORD
nonn,frac
AUTHOR
STATUS
approved

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Last modified March 19 01:57 EDT 2024. Contains 370952 sequences. (Running on oeis4.)