OFFSET
1,1
COMMENTS
This sequence is a comment on the referenced comment of R. K. Guy concerning the occurrence of 301-digit numbers.
LINKS
R. K. Guy, Re: Odd Perfect Numbers, Sep 23 2004 post to NMBRTHRY mailing list.
EXAMPLE
6 is in the sequence because 1, the number of digits in 6, is less than 2, the number of digits in 12 = sigma(6).
PROG
(PARI) isok(n) = length(digits(n, 10)) < length(digits(sigma(n), 10)) \\ Michel Marcus, Jul 23 2013
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Walter Nissen, Sep 25 2004
STATUS
approved