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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027321 Duplicate of A027315. 0
1, 2, 6, 20, 90, 692, 5774, 48924, 417440, 3580036, 30831756, 266463804 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A124382 A000666 A180890 * A027315 A005965 A000421

Adjacent sequences:  A027318 A027319 A027320 * A027322 A027323 A027324

KEYWORD

dead

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 11:57 EST 2012. Contains 205782 sequences.