Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A062234
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A062234 a(n) =2*prime(n) - prime(n+1). +0
2
1, 1, 3, 3, 9, 9, 15, 15, 17, 27, 25, 33, 39, 39, 41, 47, 57, 55, 63, 69, 67, 75, 77, 81, 93, 99, 99, 105, 105, 99, 123, 125, 135, 129, 147, 145, 151, 159, 161, 167, 177, 171, 189, 189, 195, 187, 199, 219, 225, 225, 227, 237, 231, 245, 251, 257, 267, 265, 273, 279 (list; graph; listen)
OFFSET

1,3

COMMENT

It is known that a(n) > 0 for all n (Tchebycheff, 1850).

REFERENCES

J. V. Uspensky and M. A. Heaslet, Elementary Number Theory, McGraw-Hill, NY, 1939.

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,1000

PROGRAM

(PARI) { for (n=1, 1000, write("b062234.txt", n, " ", 2*prime(n) - prime(n + 1)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 03 2009]

CROSSREFS

Cf. A000040.

Sequence in context: A064235 A098355 A107443 this_sequence A161828 A086739 A147502

Adjacent sequences: A062231 A062232 A062233 this_sequence A062235 A062236 A062237

KEYWORD

easy,nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 29 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 November 25 20:09 EST 2009. Contains 167514 sequences.


AT&T Labs Research