1,1
By the definition in A094291, it is necessary but not sufficient that x, y are chosen such that x + y <> n
Cf. A094291.
Sequence in context: A161910 A151920 A160714 this_sequence A104857 A055198 A103982
Adjacent sequences: A094347 A094348 A094349 this_sequence A094351 A094352 A094353
nonn
Hugo van der Sanden (hv(AT)crypt.org), Jun 15 2004
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