Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A166457
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A166457 Numbers n such that n*100+1 is prime. +0
1
1, 4, 6, 7, 12, 13, 16, 18, 19, 28, 30, 33, 37, 40, 42, 48, 51, 55, 57, 58, 61, 63, 67, 70, 79, 81, 85, 90, 96, 99, 103, 105, 106, 117, 118, 121, 123, 124, 126, 130, 139, 144, 151, 154, 156, 159, 160, 163, 169, 174, 183, 184, 187, 190, 193, 195, 198, 201, 202, 210, 211 (list; graph; listen)
OFFSET

1,2

EXAMPLE

a(1)=1 (1*100+1=prime); a(2)=4 (4*100+1=prime).

MAPLE

a := proc (n) if isprime(100*n+1) = true then n else end if end proc: seq(a(n), n = 1 .. 250); [From Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 01 2009]

CROSSREFS

Cf. A000040, A086304.

Sequence in context: A102143 A056853 A024566 this_sequence A047506 A102136 A102142

Adjacent sequences: A166454 A166455 A166456 this_sequence A166458 A166459 A166460

KEYWORD

nonn,new

AUTHOR

Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Oct 14 2009

EXTENSIONS

Extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 01 2009

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 November 29 12:46 EST 2009. Contains 167659 sequences.


AT&T Labs Research