OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n=1..500
FORMULA
PROG
(PARI) { n=r=0; for (m=1, 10^9, x=sigma(m) + eulerphi(m); if (x > r, r=x; write("b065388.txt", n++, " ", x); if (n==500, return)) ) } \\ Harry J. Smith, Oct 17 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Nov 05 2001
STATUS
approved