Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A062391
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A062391 a(1) = 3, a(2) = 5; a(n+1) = smallest prime number > a(n) such that the sum of any three consecutive terms is a prime. +0
4
3, 5, 11, 13, 17, 23, 31, 43, 53, 61, 67, 71, 73, 79, 89, 101, 103, 107, 127, 139, 167, 173, 181, 193, 197, 211, 223, 227, 233, 241, 269, 277, 281, 349, 353, 359, 379, 433, 467, 499, 521, 523, 557, 577, 587, 613, 631, 743, 757, 769, 821, 827, 829, 883, 947 (list; graph; listen)
OFFSET

1,1

COMMENT

What is the longest string of consecutive primes? A derived sequence could be the start of the first occurrence of a string of n consecutive primes in this sequence.

LINKS

Zak Seidov, Table of n, a(n) for n = 1..1000.

EXAMPLE

After 43, the next term is 53, since 31+43+47=121 is not prime and 31+43+53=127 is prime.

CROSSREFS

Cf. A072536, A072537, A000040.

Sequence in context: A130097 A020612 A072539 this_sequence A038951 A020578 A066587

Adjacent sequences: A062388 A062389 A062390 this_sequence A062392 A062393 A062394

KEYWORD

nonn,easy

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 27 2001

EXTENSIONS

Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jul 02 2001

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 September 5 01:44 EDT 2008. Contains 143476 sequences.


AT&T Labs Research