1,2

Rodolfo Kurchan, Mesmerizing Math Puzzles, Sterling Publications, p. 19.

Table of n, a(n) for n=1..8.

a(2)=9 because "nine" has 2 N's.

Sequence in context: A259093 A186508 A000981 * A171066 A068174 A165247

Adjacent sequences: A060224 A060225 A060226 * A060228 A060229 A060230

nonn,word

Rodolfo Kurchan, Mar 20 2001

Edited by Jon E. Schoenfield, Sep 29 2018

approved