OFFSET
1,1
COMMENTS
There are probably a large number of such sequences, but it seems worthwhile putting these four examples on record. They were the only solutions submitted.
LINKS
Daniel Ullman, Proposer, Problem E3359, Amer. Math. Monthly, 98:2 (1991), 168.
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Aug 06 2021
STATUS
approved