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A240132
Number of solutions of 1/x_1 + 1/x_2 + ... + 1/x_{2n-1} = 1 in distinct odd numbers > 1.
0
0, 0, 0, 0, 5, 379118
OFFSET
1,5
COMMENTS
The next term is a(7) > 467871307.
EXAMPLE
If 1 < x_1 < x_2 < x_3 are odd, then 1/x_1 + 1/x_2 + 1/x_3 < 3/3 = 1, so a(2) = 0.
CROSSREFS
The five sets of 9 odd numbers are: A201644, A201646, A201647, A201648, A201649.
See A238795 and A239036 for specific sets of 11 odd numbers.
Sequence in context: A123751 A152516 A295532 * A067509 A067502 A318752
KEYWORD
hard,more,nonn
AUTHOR
Jonathan Sondow, Apr 21 2014
STATUS
approved