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!)
A171006 Binomial(n-k-1,k) * binomial(n-k,k+1) where k = ceiling(n/4). 3
0, 0, 0, 1, 6, 1, 12, 60, 200, 150, 700, 2450, 7056, 8820, 31752, 97020, 261360, 426888, 1359072, 3864861, 10020010, 19324305, 57257200, 155739584, 393853824, 851005584, 2405321568, 6347376360, 15774544800, 37026362100, 101219995800, 261312846300 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
LINKS
CROSSREFS
Another lower bound for A094837. Cf. A171001, A171002, A171003.
Sequence in context: A163945 A013613 A122508 * A176121 A062190 A080211
KEYWORD
nonn
AUTHOR
John P. Linderman, Sep 02 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 March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)