OFFSET
1,3
COMMENTS
EXAMPLE
There are 4 numbers in A291460 less than 10^3 = 1000 (16, 128, 384, 512). Therefore, a(3) = 4.
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Bobby Jacobs and Robert G. Wilson v, Aug 26 2017
EXTENSIONS
a(14)-a(20) from Giovanni Resta, Aug 31 2017
STATUS
approved