login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A159611 Indices, in the sequence of primes, of the known Fermat primes. 2
2, 3, 7, 55, 6543 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Walter Nissen, Home Page (listed in lieu of email address)

EXAMPLE

3, the Fermat prime corresponding to n = 0, is the 2nd prime, so a(0) = 2. 17, the Fermat prime corresponding to n = 2, is the 7th prime, so a(2) = 7.

CROSSREFS

Cf. A019434, the Fermat primes, A000040, the primes.

Sequence in context: A030090 A075461 A059785 * A156585 A087358 A057736

Adjacent sequences:  A159608 A159609 A159610 * A159612 A159613 A159614

KEYWORD

nonn

AUTHOR

Walter Nissen Apr 16 2009

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 06:27 EST 2012. Contains 205998 sequences.