OFFSET
1,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..1000
EXAMPLE
omega(16)=omega(61)=1.
MATHEMATICA
Select[Range[130], PrimeNu[#]==PrimeNu[FromDigits[Reverse[ IntegerDigits[ #]]]]&] (* Harvey P. Dale, Jan 14 2012 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Giovanni Resta, Jan 29 2006
STATUS
approved