Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A033286
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A033286 n*(n-th prime). +0
8
2, 6, 15, 28, 55, 78, 119, 152, 207, 290, 341, 444, 533, 602, 705, 848, 1003, 1098, 1273, 1420, 1533, 1738, 1909, 2136, 2425, 2626, 2781, 2996, 3161, 3390, 3937, 4192, 4521, 4726, 5215, 5436, 5809, 6194, 6513, 6920, 7339, 7602, 8213, 8492, 8865, 9154, 9917 (list; graph; listen)
OFFSET

1,1

COMMENT

Does an n exist such that n*p(n)/(n+p(n)) is an integer ? - Ctibor O. Zizka (ctibor.zizka(AT)seznam.cz), Mar 04 2008

LINKS

Albert Frank, International Contest Of Logical Sequences, 2002 - 2003. Item 1

Albert Frank, Solutions of International Contest Of Logical Sequences, 2002 - 2003.

MATHEMATICA

Table[Prime[n]*n, {n, 38}] (Alonso Delarte)

PROGRAM

(Mupad) ithprime(i)*i $ i = 1..47 - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 26 2007

CROSSREFS

Cf. A014689.

Sequence in context: A033298 A091766 A138621 this_sequence A098651 A087427 A141126

Adjacent sequences: A033283 A033284 A033285 this_sequence A033287 A033288 A033289

KEYWORD

nonn

AUTHOR

njas

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 July 26 13:41 EDT 2008. Contains 142293 sequences.


AT&T Labs Research