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 A076784 Let u(1)=u(2)=u(3)=1, u(n)=(2^floor(u(n-1)/2)+2^floor(u(n-2)/2)+1)/u(n-3) then a(n) = numerator of u(n). 1
 1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13, 91, 13, 3, 12, 12, 1, 13, 13, 7, 4, 3, 1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13, 91, 13, 3, 12, 12, 1, 13, 13, 7, 4, 3, 1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13, 91, 13, 3, 12, 12, 1, 13, 13, 7, 4, 3, 1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Sequence is 24-periodic LINKS FORMULA Period is (1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13, 91, 13, 3, 12, 12, 1, 13, 13, 7, 4, 3) MATHEMATICA PadRight[{}, 120, {1, 1, 1, 3, 4, 7, 13, 13, 1, 12, 12, 3, 13, 91, 13, 3, 12, 12, 1, 13, 13, 7, 4, 3}] (* Harvey P. Dale, May 27 2018 *) CROSSREFS Cf. A076785. Sequence in context: A231337 A049930 A102938 * A279815 A088764 A093124 Adjacent sequences:  A076781 A076782 A076783 * A076785 A076786 A076787 KEYWORD frac,nonn AUTHOR Benoit Cloitre, Nov 24 2002 STATUS approved

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Last modified January 21 00:46 EST 2022. Contains 350473 sequences. (Running on oeis4.)