login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A192140 Palindromic numbers m such that their concatenation of prime divisors are also palindromic numbers. 4
2, 3, 4, 5, 7, 8, 9, 11, 101, 121, 131, 151, 181, 191, 313, 343, 353, 373, 383, 727, 747, 757, 787, 797, 919, 929, 1331, 10001, 10201, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The corresponding values of palindromic concatenation in A192141.

Superset of A002385 (palindromic primes) and A084092 (prime power decimal palindromes).

Subset of A002113 (palindromic numbers) and A192137.

LINKS

Table of n, a(n) for n=1..39.

EXAMPLE

Concatenation of prime divisors of number 747 = 3^2 * 83 is 383 (palindromic number).

CROSSREFS

Cf. A002113, A002385, A084317, A084092, A192137, A192138, A192139, A192141.

Sequence in context: A098776 A098897 A265641 * A084092 A288927 A086753

Adjacent sequences:  A192137 A192138 A192139 * A192141 A192142 A192143

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Jun 24 2011

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 November 21 12:28 EST 2019. Contains 329370 sequences. (Running on oeis4.)