OFFSET
1,1
COMMENTS
The first term is the sum solution of Martin Gardner's "Impossible Problem" for numbers each with an upper bound anywhere between 62 and 100.
REFERENCES
M. Gardner,"Mathematical Games" Problem 1 pp. 20, 23-24 in Scientific American, Dec. 1979.
LINKS
G. Darby, Know, Don't Know Problem.
R. V. Gassel et al., To Know, or Not To Know.
K. Uhland, A Great Puzzle.
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Sep 10 2003
STATUS
approved