OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..60
MATHEMATICA
Select[ FromDigits /@ Flatten[ Table[ PadLeft[{3}, i, # ] & /@ {1, 2, 3, 4, 5, 6, 7, 8, 9}, {i, 2, 18}], 1], PrimeQ[ # ] &]
Union[Flatten[Table[Select[FromDigits/@Table[Join[Table[n, {i}], {3}], {i, 0, 25}], PrimeQ], {n, 9}]]] (* Harvey P. Dale, Nov 25 2010 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Robert G. Wilson v, Nov 22 2003
EXTENSIONS
Additional terms from Harvey P. Dale, Nov 25 2010
STATUS
approved