1,1
The subsequent terms are complex.
From a quiz.
K. Russell and P. Carter, Number Puzzles, W. Foulsham and Co. Ltd. (1993).
Table of n, a(n) for n=1..7.
Sequence in context: A172933 A145212 A195239 * A320511 A259288 A325608
Adjacent sequences: A122061 A122062 A122063 * A122065 A122066 A122067
nonn,fini,full
Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006
approved