Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A086475
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A086475 a(1) = 1 and then least square-free number such that every partial concatenation of 2 or more terms is a prime. +0
1
1, 3, 7, 11, 13, 29, 37, 113, 123, 229, 287, 319, 443, 481, 533, 541, 557, 771, 777, 991, 1479, 1487, 1663, 2063, 2163, 2193, 2553, 2911, 3251, 3391, 3867, 3873, 3983, 4021, 4047, 4233, 4481, 4777, 4937, 4981, 6123, 6711, 7251 (list; graph; listen)
OFFSET

1,2
EXAMPLE

13,137,13711 etc. are primes.

CROSSREFS

Sequence in context: A111363 A114273 A074336 this_sequence A053728 A059055 A004061

Adjacent sequences: A086472 A086473 A086474 this_sequence A086476 A086477 A086478

KEYWORD

base,nonn

AUTHOR

Jason Earls and Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 22 2003

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research

Legal Notice
© 2007 AT&T Knowledge Ventures. All Rights Reserved.