OFFSET
1,1
COMMENTS
Select first for maximum number of 1's, then take the largest.
In more detail: To get a(n), look at the list of all the n-digit primes. Suppose k is the maximum number of 1's of any number on the list. Throw out any prime on the list that does not contain k 1's. Then a(n) = maximal number that is left on the list. - N. J. A. Sloane, Mar 20 2018
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, May 17 2010
STATUS
approved