login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084092 Prime power decimal palindromes. 9
1, 2, 3, 4, 5, 7, 8, 9, 11, 101, 121, 131, 151, 181, 191, 313, 343, 353, 373, 383, 727, 757, 787, 797, 919, 929, 1331, 10201, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14641, 14741, 15451, 15551, 16061, 16361 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..600

Eric Weisstein's World of Mathematics, Prime Power.

Eric Weisstein's World of Mathematics, Palindromatic Prime.

EXAMPLE

121=A000961(42)=A002113(21), therefore 121 is a term;

131=A000961(46)=A002113(22), therefore 131 is a term.

MATHEMATICA

Join[{1}, Select[Range[16370], Reverse[x = IntegerDigits[#]] == x && PrimePowerQ[#] &]] (* Jayanta Basu, Jun 24 2013 *)

Join[{1}, Select[Range[17000], PalindromeQ[#]&&PrimePowerQ[#]&]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 07 2019 *)

CROSSREFS

Intersection of A000961 and A002113, union of A002385 and A084093.

Sequence in context: A098897 A265641 A192140 * A288927 A342513 A086753

Adjacent sequences:  A084089 A084090 A084091 * A084093 A084094 A084095

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, May 11 2003

EXTENSIONS

Corrected and extended by T. D. Noe, Oct 25 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 22 00:08 EST 2022. Contains 350481 sequences. (Running on oeis4.)