OFFSET
1,1
COMMENTS
Primes with certain digits and various combinations of those digits along with any number of zeros inserted are members. E.g., primes of the form 196(0_z)3, or 3+49*2^(n+2)*5^n for n>1, etc. are in this sequence.
EXAMPLE
a(2)=163 because the digits of 2*163 sorted descending are 632; the divisors of 163 are [1, 163] and 1+631 = 632.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Jason Earls, Jun 11 2003
EXTENSIONS
More terms from Sean A. Irvine, May 27 2010
STATUS
approved