OFFSET
1,1
LINKS
M. Fleuren, Factors and primes of Smarandache sequences.
M. Fleuren, Smarandache Factors and Reverse factors
Carlos Rivera, Puzzle 8. Primes by Listing, The Prime Puzzles and Problems Connection.
MATHEMATICA
Join[{1}, Table[i=1; While[PrimeOmega[FromDigits[Flatten[IntegerDigits[Range[i, 1, -1]]]]]!=n, i++]; i, {n, 2, 10}]] (* Jayanta Basu, May 30 2013 *)
CROSSREFS
KEYWORD
nonn,base,hard,more
AUTHOR
Patrick De Geest, Aug 15 1999
EXTENSIONS
a(11)-a(12) from Sean A. Irvine, Aug 17 2021
Edited by N. J. A. Sloane, Sep 04 2021
STATUS
approved