Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A066676
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A066676 Smallest number m such that Phi[m] is a multiple of n-th primorial number, the product of first n primes. +0
2
3, 7, 31, 211, 2311, 60653, 1023053, 19417793 (list; graph; listen)
OFFSET

1,1

FORMULA

a[n] = Min{x : Mod[A000010(x), A002110(n)] = 0}

EXAMPLE

n = 8: a[8] = 19417793, Phi[a(8)] = 19199380 = 2*9699690 = 2*2*3*5*7*11*13*17*19.

CROSSREFS

Cf. A000010, A002110, A066674-A066678.

Sequence in context: A083772 A093441 A087864 this_sequence A073917 A030521 A105767

Adjacent sequences: A066673 A066674 A066675 this_sequence A066677 A066678 A066679

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Dec 19 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 December 13 23:45 EST 2009. Contains 170824 sequences.


AT&T Labs Research