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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A057225 Numbers n such that (Product of first n Mersenne prime exponents) - 1 is prime. 0
2, 3, 5, 9, 13, 27 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A000043.

Sequence in context: A018138 A175125 A171925 * A070819 A195667 A005244

Adjacent sequences:  A057222 A057223 A057224 * A057226 A057227 A057228

KEYWORD

nonn

AUTHOR

G. L. Honaker, Jr. (honak3r(AT)gmail.com), Sep 18 2000

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 14 11:36 EST 2012. Contains 205623 sequences.