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A076742
Let u(1)=u(2)=1, u(n)=(2^floor(u(n-1)/2)+1)/u(n-2) then a(n) = numerator of u(n).
1
1, 1, 2, 3, 3, 2, 4, 3, 9, 1, 8, 2, 27, 3, 16, 4, 27, 9, 8, 8, 9, 27, 4, 16, 3, 27, 2, 8, 1, 9, 3, 4, 2, 3, 3, 2, 1, 1, 2, 3, 3, 2, 4, 3, 9, 1, 8, 2, 27, 3, 16, 4, 27, 9, 8, 8, 9, 27, 4, 16, 3, 27, 2, 8, 1, 9, 3, 4, 2, 3, 3, 2, 1, 1, 2, 3, 3, 2, 4, 3, 9, 1, 8, 2, 27, 3, 16, 4, 27, 9, 8, 8, 9, 27, 4, 16
OFFSET
1,3
COMMENTS
Sequence is 36-periodic
FORMULA
Period is (1, 1, 2, 3, 3, 2, 4, 3, 9, 1, 8, 2, 27, 3, 16, 4, 27, 9, 8, 8, 9, 27, 4, 16, 3, 27, 2, 8, 1, 9, 3, 4, 2, 3, 3, 2)
CROSSREFS
Cf. A076780.
Sequence in context: A130156 A139169 A238444 * A373345 A376698 A308284
KEYWORD
frac,nonn
AUTHOR
Benoit Cloitre, Nov 24 2002
STATUS
approved