OFFSET
1,4
COMMENTS
Whether exists n>1 for which a(n)=0?
a(n)=1 for 2,3,7,13,23,31,... Is this sequence infinite?
LINKS
Peter J. C. Moses, Table of n, a(n) for n = 1..1000
EXAMPLE
n=9 in its representations in bases 2,...,10 has zeros only in bases 2,3,9: 1001,100,10 respectively. The total number of zeros is 5. So a(9)=5.
MATHEMATICA
Map[Length[Select[Flatten[IntegerDigits[#, Range[2, 10]]], #==0&]]&, Range[100] (* Peter J. C. Moses, Jan 26 2014 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vladimir Shevelev, Jan 26 2014
STATUS
approved