OFFSET
1,2
COMMENTS
No other terms < 10^59. - Chai Wah Wu, Dec 06 2015
EXAMPLE
2612736 = (2*6*1*2*7*3*6)*phi(2*6*1*2*7*3*6), so 2612736 is in the sequence.
CROSSREFS
KEYWORD
base,more,nonn
AUTHOR
Farideh Firoozbakht, Dec 26 2008
STATUS
approved