1,2
a(n) is divisible by 3 for n > 7.
More generally, a(n) is divisible by m for all n >= 2^m. - Max Alekseyev, Aug 05 2015
Table of n, a(n) for n=1..10.
phi(33) = phi(34) = phi(35) = 4, so a(3)=4.
Cf. A006558.
Sequence in context: A166880 A079088 A161661 * A107634 A060659 A244363
Adjacent sequences: A115155 A115156 A115157 * A115159 A115160 A115161
nonn,more,hard
Jud McCranie, Jan 14 2006
a(10) from Jud McCranie, Nov 27 2018
approved
