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!)
A140939 Number of 7 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,11,n can be permuted, see formula. 0
1, 31824, 200443464, 431621592480, 418241323113120, 216147115784860416, 66906538465238667936, 13494534142758137486784 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
(empirical) set p,q,r to n,11,7 (in any order) in s=p+q+r-1; a(n) = product {i in 0..r-1} (binomial(s,p+i)*i!/(s-i)^(r-i-1))
CROSSREFS
Sequence in context: A284519 A183704 A278013 * A237165 A134124 A203738
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 05 2008
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 June 17 09:14 EDT 2024. Contains 373444 sequences. (Running on oeis4.)