OFFSET
1,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
14^2 + 41^2 = 1877, a prime, so 14 belongs to the sequence.
MATHEMATICA
Select[Range[10^3], PrimeQ[ #^2 + FromDigits[Reverse[IntegerDigits[ # ]]]^2] &]
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Joseph L. Pe, Apr 10 2002
STATUS
approved