A076824 Let a(1)=a(2)=1, a(n)=(2^ceiling(a(n-1)/2)+1)/a(n-2).

1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3, 1, 1, 3, 5, 3

Offset

1,3

Links

Table of n, a(n) for n=1..105.

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 1).

Formula

5-periodic with period (1, 1, 3, 5, 3)

Mathematica

LinearRecurrence[{0, 0, 0, 0, 1}, {1, 1, 3, 5, 3}, 105] (* Ray Chandler, Aug 25 2015 *)

Crossrefs

Cf. A076839.

Sequence in context: A114865 A096196 A351179 * A103728 A243533 A239730

Adjacent sequences: A076821 A076822 A076823 * A076825 A076826 A076827

Keyword

nonn

Author

Benoit Cloitre, Nov 24 2002

Status

approved