Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A119416
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A119416 n * (smallest prime greater than largest prime factor of n). +0
3
2, 6, 15, 12, 35, 30, 77, 24, 45, 70, 143, 60, 221, 154, 105, 48, 323, 90, 437, 140, 231, 286, 667, 120, 175, 442, 135, 308, 899, 210, 1147, 96, 429, 646, 385, 180, 1517, 874, 663, 280, 1763, 462, 2021, 572, 315, 1334, 2491, 240, 539, 350, 969, 884, 3127, 270 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n) = n * A117366(n);

A000005(a(n)) = 2*A000005(n) = A062011(n).

EXAMPLE

a(10) = (2*5)*7.

MATHEMATICA

Insert[Table[n*Prime[PrimePi[FactorInteger[n][[ -1]][[1]]] + 1], {n, 2, 100}], 2, 1] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), May 18 2006

CROSSREFS

Cf. A006530, A087560.

Sequence in context: A072171 A131518 A130642 this_sequence A134891 A020947 A011777

Adjacent sequences: A119413 A119414 A119415 this_sequence A119417 A119418 A119419

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 17 2006

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