Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A114782
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A114782 Smallest prime of the form 10^k + prime(n), k > = d, the number of digits in prime(n). 0 if no such primes exist. a(n) = 0 if prime(n) + 1 == 0 (mod 3). +0
1
0, 13, 0, 17, 0, 113, 0, 1019, 0, 0, 131, 137, 0, 100043, 0, 0, 0, 1061, 167, 0, 173, 179, 0, 0, 197, 0, 1103, 0, 1109, 0, 100000127, 0, 0, 10139, 0, 1151, 100000000000000000000157, 1163, 0, 0, 0, 1181, 0, 1193, 0, 1000199, 10211, 1223, 0, 1229, 0, 0, 1000000241, 0, 0, 0, 0, 10271, 1277, 0, 1283, 0 (list; graph; listen)
OFFSET

1,2

COMMENT

Conjecture a(n) = 0 iff prime(n) + 1 == 0 (mod 3).

EXAMPLE

a(8) = 1019 = 19 + 10^3, prime(8) = 19.

CROSSREFS

Cf. A114780.

Adjacent sequences: A114779 A114780 A114781 this_sequence A114783 A114784 A114785

Sequence in context: A094896 A067155 A073867 this_sequence A065112 A114783 A094902

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 17 2005

EXTENSIONS

More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 06 2006

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 October 15 09:18 EDT 2008. Contains 145015 sequences.


AT&T Labs Research