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A256962
Numbers n such that A005210(n) = A005210(n-1).
1
2, 90, 98, 5518, 40722, 2487370, 16433978, 20034266
OFFSET
1,1
COMMENTS
Possibly there are no further terms?
a(9) >= 10^12. - Hiroaki Yamanouchi, Apr 16 2015
REFERENCES
Popular Computing (Calabasas, CA), Z-Sequences, Vol. 4 (No. 42, Sep 1976), pp. 12-16.
LINKS
Popular Computing (Calabasas, CA), Z-Sequences, continued. Annotated and scanned copy of pages 14, 15, 16, 18 of Vol. 5 (No. 56, Nov 1977).
CROSSREFS
Cf. A005210.
Sequence in context: A338734 A309994 A339581 * A266807 A355574 A076532
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 16 2015
EXTENSIONS
a(1) prepended and a(6)-a(8) added by Hiroaki Yamanouchi, Apr 16 2015
STATUS
approved