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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087305 Smallest n-digit non-palindromic number such that it and its digit reversal have the same prime signature. 0
13, 107, 1002, 10002, 100006, 1000007, 10000013, 100000005, 1000000007, 10000000006, 100000000007, 1000000000006, 10000000000003, 100000000000002, 1000000000000003, 10000000000000002, 100000000000000005 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

EXAMPLE

a(6) = 100006 = 2*13*1613 and 600001 = 19*23*1373 both have prime signature p*q*r, p,q,r are primes.

CROSSREFS

Cf. A085869, A068893.

Sequence in context: A132261 A142364 A164301 * A168117 A038384 A038385

Adjacent sequences:  A087302 A087303 A087304 * A087306 A087307 A087308

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 02 2003

EXTENSIONS

More terms from David Wasserman (dwasserm(AT)earthlink.net), Apr 19 2005

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

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

Last modified February 16 23:45 EST 2012. Contains 205978 sequences.