OFFSET
1,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..100
EXAMPLE
1/2 + 1/3 + 1/5 + 1/7 + 1/11 + 1/101 + ... gives 1/2, 5/6, 31/30, 247/210, ...
MATHEMATICA
palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; Numerator[ Accumulate[1/#&/@Select[Prime[Range[200]], palQ]]] (* Harvey P. Dale, Dec 21 2011 *)
CROSSREFS
KEYWORD
nonn,frac,base
AUTHOR
EXTENSIONS
More terms from Erich Friedman, Jun 03 2001
STATUS
approved