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a(n) = 2*a(n-4) for n > 4; A093873(a(n)) = 3.
Table of n, a(n) for n=1..47.
Cf. A029744, A070875, A070876.
Sequence in context: A248629 A008558 A335912 * A289686 A251394 A155877
Adjacent sequences: A123757 A123758 A123759 * A123761 A123762 A123763
Reinhard Zumkeller, Oct 13 2006