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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027438 Largest prime factor of [e*2^n]. 0
2, 5, 5, 7, 43, 43, 173, 347, 139, 107, 23, 293, 293, 293, 293, 293, 79, 79, 883, 883, 114013, 114013, 114013, 114013, 1232573, 1232573, 1499, 364841611, 364841611, 364841611, 364841611, 170801, 170801, 56812319, 56812319, 56812319, 56812319 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

PROG

(PARI) for(n=0, 22, print(factor(floor(exp(1)*2^n))))

CROSSREFS

Cf. A027437.

Sequence in context: A165898 A194531 A092394 * A204237 A153162 A168199

Adjacent sequences:  A027435 A027436 A027437 * A027439 A027440 A027441

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Allan Wechsler (acw(AT)alum.mit.edu)

EXTENSIONS

More terms from Jason Earls (zevi_35711(AT)yahoo.com), Jul 11 2001

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 06:24 EST 2012. Contains 205994 sequences.