Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A108119
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A108119 Numbers n such that prime(n) and prime(n+1) are congruent to 1 mod 10. +0
1
42, 53, 82, 115, 125, 141, 172, 177, 193, 233, 279, 369, 399, 431, 474, 500, 575, 580, 585, 650, 651, 672, 708, 737, 751, 760, 795, 798, 820, 841, 842, 863, 873, 933, 1019, 1031, 1099, 1112, 1166, 1178, 1225, 1245, 1266, 1312, 1352, 1436, 1463, 1479, 1505 (list; graph; listen)
OFFSET

1,1

EXAMPLE

Prime(42)=181, prime(43)=191. This is the first pair of successive primes both ending by 1.

MATHEMATICA

ra=Range[2000]; cnd=Mod[Prime[ # ], 10]==Mod[Prime[ #+1], 10]==1&; se=Select[ra, cnd]

CROSSREFS

Sequence in context: A124189 A063998 A105346 this_sequence A116262 A156394 A083244

Adjacent sequences: A108116 A108117 A108118 this_sequence A108120 A108121 A108122

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Jun 04 2005

page 1

Search completed in 0.003 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 December 10 00:48 EST 2009. Contains 170565 sequences.


AT&T Labs Research