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A211123 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1. 0
3, 5, 7, 9, 15, 21, 25, 35, 63, 105, 225 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
Burshtein, Nechemia. All the solutions of the equation Sum_{i=1..11}} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma. Discrete Math. 308 (2008), no. 18, 4286--4292. MR2427761 (2009e:11061)
LINKS
CROSSREFS
The 17 solutions are given in A211118-A211134. Cf. A201643, A201644, A201646, A201647, A201648, A201649.
Sequence in context: A211120 A211122 A211119 * A290514 A289873 A018736
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Apr 02 2012
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)