

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




OFFSET

0,2


LINKS



FORMULA

(empirical) set p,q,r to n,11,7 (in any order) in s=p+q+r1; a(n) = product {i in 0..r1} (binomial(s,p+i)*i!/(si)^(ri1))


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



