OFFSET
1,3
LINKS
Robert Price, Table of n, a(n) for n = 1..33
MATHEMATICA
Select[PolygonalNumber[6, Range[0, 10^6]], PalindromeQ] (* Robert Price, Apr 27 2019 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jeff Heleen, May 26 2000
EXTENSIONS
Added a(1)=0 by Robert Price, Apr 27 2019
STATUS
approved