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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A056821 Totient of the Woodall numbers (A003261), n*2^n -1. 0
1, 6, 22, 36, 104, 382, 712, 1936, 4320, 6824, 15012, 46992, 79344, 183000, 421008, 480000, 1453784, 4658784, 8877792, 20958480, 38887680, 61284600, 110250264, 388201176, 719023536, 1734432480, 2889658368, 4745378304, 10350643968 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Table[EulerPhi[n*2^n - 1], {n, 1, 35}]

CROSSREFS

Cf. A003261.

Sequence in context: A046392 A046408 A123017 * A031083 A031305 A015721

Adjacent sequences:  A056818 A056819 A056820 * A056822 A056823 A056824

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 31 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 17 16:49 EST 2012. Contains 206058 sequences.