login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A045990
a(n) = A034997(n)/2.
0
1, 3, 16, 185, 5646, 533022, 173663176
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
CROSSREFS
Sequence in context: A254430 A180721 A192668 * A007006 A174137 A166860
Adjacent sequences: A045987 A045988 A045989 * A045991 A045992 A045993
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 20 22:42 EDT 2024. Contains 376078 sequences. (Running on oeis4.)