2,3

Table of n, a(n) for n=2..91.

a(11)=3, which counts these reductions: 11->4->2->1.

Sequence in context: A108502 A260235 A078120 * A331362 A139325 A216325

Adjacent sequences: A057522 A057523 A057524 * A057526 A057527 A057528

nonn

Clark Kimberling, Sep 03 2000

approved