OFFSET
1,2
LINKS
Shyam Sunder Gupta, Table of n, a(n) for n = 1..18
EXAMPLE
a(5)=3003 because 3003 is 77th triangular number and 77 is palindrome.
MATHEMATICA
Select[Table[{n, (n(n+1))/2}, {n, 10^8}], AllTrue[#, PalindromeQ]&][[;; , 2]] (* Harvey P. Dale, Jun 04 2023 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Shyam Sunder Gupta, Sep 17 2013
EXTENSIONS
Previous Mathematica program replaced by Harvey P. Dale, Jun 04 2023
STATUS
approved