The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A181225 Number of length 2n sequences p(i=0..2n-1) with 0<=p(i)<=i and having exactly n maxima 1
2, 3, 26, 476, 14905, 708825, 47514180, 4264132468, 493337571005, 71476985762027, 12673922434134249, 2699365743596908540, 679965250748621333815, 199945129785484988046467, 67870868805277105224767736 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The 2n,n elements of A181229
LINKS
CROSSREFS
Sequence in context: A178196 A258766 A056722 * A143876 A184506 A126203
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2010
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 May 25 12:29 EDT 2024. Contains 372788 sequences. (Running on oeis4.)