OFFSET
0,6
LINKS
Ivan Neretin, Table of n, a(n) for n = 0..10000
PROG
(PARI) a(n) = (sumdigits(n)^2 - sumdigits(n^2))/9; \\ Michel Marcus, Sep 01 2016
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vladeta Jovovic, May 04 2002
EXTENSIONS
Offset changed to 0 for compatibility with A067552 by Ivan Neretin, Sep 01 2016
STATUS
approved