1,2

For the terms a(1) through a(25) is it seen that if n is odd then a(n)=a(n-1); also that if n is not a multiple of 4 then a(2n)=2a(2n-2). Does this behavior continue?

Table of n, a(n) for n=1..25.

Cf. A172020.

Sequence in context: A116931 A206558 A145810 * A205478 A262966 A034397

Adjacent sequences: A172145 A172146 A172147 * A172149 A172150 A172151

nonn

John W. Layman, Jan 26 2010

approved