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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A127429 2^(n*(n-1)/2) - n!. 0
0, 0, 0, 2, 40, 904, 32048, 2092112, 268395136, 68719113856, 35184368460032, 36028796979047168, 73786976294359204864, 302231454903651066655744, 2475880078570760462619957248, 40564819207303340846586828204032, 1329227995784915872903786137490456576 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
COMMENTS
Theorem: 2^(n*(n-1)/2) > n! for n > 2.
REFERENCES
D. S. Mitrinovic, Analytic Inequalities, Springer-Verlag, 1970; p. 193, 3.1.19.
LINKS
CROSSREFS
Sequence in context: A264716 A264713 A012637 * A322179 A012834 A304448
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 02 2007
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | 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 March 4 23:31 EST 2024. Contains 370537 sequences. (Running on oeis4.)