Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A065136
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A065136 Numbers n such that n = pi(n)*k + 1 for some k. +0
1
3, 9, 11, 13, 28, 34, 37, 43, 121, 336, 341, 351, 356, 361, 1081, 1087, 1135, 3060, 3074, 3081, 3088, 3095, 8409, 8425, 8441, 8457, 8465, 8473, 23527, 23536, 24301, 64541, 64581, 64591, 64601, 64611, 64651, 64661, 64691, 64701, 64711, 64721 (list; graph; listen)
OFFSET

1,1

COMMENT

Solutions to Mod[n,PrimePi[n]] = 1, i.e. A065134(n) = 1.

EXAMPLE

n=28: Pi(28)=9 and 28=3*Pi(28)+1, so 28 is here; n=27 is present in A057809. A large proportion of A057809(m)+1 numbers (but not all of them) arise in this sequence. Numbers from A057809 arise in clusters [see grouping around 8450, 64650, 480900 etc.]

CROSSREFS

A000720, A065134, A057809.

Sequence in context: A101735 A101620 A116444 this_sequence A075720 A106373 A059326

Adjacent sequences: A065133 A065134 A065135 this_sequence A065137 A065138 A065139

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Oct 15 2001

page 1

Search completed in 0.005 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 23 17:09 EST 2009. Contains 167438 sequences.


AT&T Labs Research