1,1
The subsequent terms are complex.
From a quiz.
K. Russell and P. Carter, Number Puzzles, W. Foulsham and Co. Ltd. (1993).
Sequence in context: A166219 A097728 A145212 this_sequence A162701 A063701 A020328
Adjacent sequences: A122061 A122062 A122063 this_sequence A122065 A122066 A122067
nonn,fini,full
Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006
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