A084093 Prime power decimal palindromes that are not prime.

1, 4, 8, 9, 121, 343, 1331, 10201, 14641, 94249, 1030301, 104060401, 900075181570009, 10022212521222001, 12124434743442121, 12323244744232321, 12341234943214321, 1022321210249420121232201, 1210024420147410244200121

Offset: 1

Author

Reinhard Zumkeller, May 11 2003

Keywords

• nonn
• base

Comments

A084092 without A002385.

a(n) = A072037(n-1) for n > 1. - Georg Fischer, Oct 19 2018

Examples

			a(9)=14641=11^4; a(10)=94249=307^2=A000040(63)^2;
a(11)=1030301=101^3=A000040(26)^3.
		

Links

• Donovan Johnson, Table of n, a(n) for n = 1..27 (terms < 10^30)
• Eric Weisstein's World of Mathematics, Palindromic Prime.
• Eric Weisstein's World of Mathematics, Prime Power.

Crossrefs

Cf. A002385, A072037, A084092.

Extensions

a(13)-a(17) from Donovan Johnson, Feb 22 2008

Missing term 104060401 added by Donovan Johnson, Jul 02 2011