1,1

Table of n, a(n) for n=1..10.

Sequence {b_9(m)} is 1,5,7,2,11,5,7,2,11,... (5,7,2,11) repeats. So a(9) = 4, the length of the cycle in {b_9(m)}.

Cf. A134835.

Sequence in context: A130526 A174523 A261172 * A035583 A145178 A105079

Adjacent sequences: A134831 A134832 A134833 * A134835 A134836 A134837

more,nonn

Leroy Quet, Nov 12 2007

approved