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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139298 2^(2p - 1)/4, where p is a Mersenne prime A000668(n). 4
8, 2048, 576460752303423488 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = 2^(2*A000668(n)-1)/4 = A139294(n)/4.

CROSSREFS

Sequence in context: A076955 A024112 A092414 * A004819 A001375 A189308

Adjacent sequences:  A139295 A139296 A139297 * A139299 A139300 A139301

KEYWORD

bref,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Apr 13 2008

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 15 21:56 EST 2012. Contains 205860 sequences.