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

 

Logo

Many excellent designs for a new banner were submitted. We will use the best of them in rotation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A115686 Powerful(1) numbers (A001694) whose digit reversal is a prime number. 1
16, 32, 125, 128, 196, 200, 361, 392, 500, 784, 1024, 1352, 1369, 1372, 1444, 1600, 1681, 2000, 3200, 3844, 5000, 7225, 7688, 7921, 9025, 9248, 9409, 9800, 10976, 11236, 12500, 12800, 13448, 14161, 14792, 16000, 18496, 19321, 19600, 20000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

Index entries for sequences related to powerful numbers

EXAMPLE

7688=2^3*31^2 is powerful and 8867 is prime.

CROSSREFS

Cf. A001694.

Sequence in context: A045071 A007824 A235056 * A088112 A232510 A206344

Adjacent sequences:  A115683 A115684 A115685 * A115687 A115688 A115689

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Jan 31 2006

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified April 20 02:04 EDT 2014. Contains 240777 sequences.