OFFSET
1,4
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
a(11)=14 because 14 is the sum of aliquot divisors of 11th palindromic number (i.e. 22).
MATHEMATICA
Total[Most[Divisors[#]]]&/@Select[Range[1000], PalindromeQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Feb 19 2020 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta, Nov 25 2002
STATUS
approved