OFFSET
1,1
COMMENTS
Base-3 analog of what A077652 is for base 10.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..2500
EXAMPLE
a(3) = 212, which starts and ends with "2", and in base 3 means 2*(3^2) + 1*(3^1) + 2*(3^0) = 18 + 3 + 2 = 23 (base 10), which is prime.
MATHEMATICA
FromDigits/@Select[IntegerDigits[#, 3]&/@Prime[Range[100]], #[[1]]==#[[-1]]&] (* Harvey P. Dale, Oct 23 2022 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Jonathan Vos Post, Nov 06 2013
EXTENSIONS
More terms from Alois P. Heinz, Nov 07 2013
STATUS
approved