OFFSET
1,1
COMMENTS
These values are only conjectural.
a(n) = 0 if prime(n) is in A062800. - Robert Israel, Jun 19 2015
LINKS
Hiroaki Yamanouchi, Table of n, a(n) for n = 1..500
Popular Computing (Calabasas, CA), Two Tables, Vol. 1, (No. 9, Dec 1973), page PC9-16.
EXAMPLE
a(1)=86 because 2^86 = 77371252455336267181195264 is conjectured to be the highest power of 2 that doesn't contain the digit 0.
MAPLE
N:= 100: K:= 100: # to get a(1) to a(N), searching up to k = K
for n from 1 to N do
p:= ithprime(n);
A[n]:= 0;
for k from 1 to K do
if not has(convert(p^k, base, 10), 0) then
A[n]:= k
fi
od
od:
seq(A[n], n=1..N); # Robert Israel, Jun 19 2015
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Jun 18 2015
EXTENSIONS
a(14)-a(57) from Hiroaki Yamanouchi, Jun 19 2015
STATUS
approved