1,1
R. K. Guy, Unsolved Problems in Number Theory, E16.
Cf. A005184, A068529.
Adjacent sequences: A068527 A068528 A068529 this_sequence A068531 A068532 A068533
Sequence in context: A057691 A089619 A094473 this_sequence A088315 A138296 A094474
more,nonn
Naohiro Nomoto (n_nomoto(AT)yabumi.com), Mar 22 2002
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