proposed
approved
editing
(PARI) isok(n) = (sumdigits(16^n-1) % n) == 0; \\ Michel Marcus, Oct 16 2013
base,more,nonn
_Zak Seidov (zakseidov(AT)yahoo.com), _, Sep 25 2009
OEIS Server: https://oeis.org/edit/global/139
Positive integers n such that the sum of decimal digits of (16^n-1) is divisible by n.
1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 17, 18, 23, 37, 43, 46, 60, 119, 183, 223
1,2
Comparing with A165722 there is one additional term a(8)=9.
No other terms below 10^5.
Cf. A165722.
base,nonn
Zak Seidov (zakseidov(AT)yahoo.com), Sep 25 2009
