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!)
A204337 Number of (n+1)X7 0..7 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively 0

%I #4 Mar 31 2012 12:37:01

%S 338578395,167047130892,52148478516988,9654523816277542,

%T 1164825006247347513

%N Number of (n+1)X7 0..7 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively

%C Column 6 of A204339

%e Some solutions for n=4

%e ..5..4..4..4..2..3..4....5..4..4..2..2..3..5....4..4..7..4..4..6..6

%e ..4..5..5..5..7..6..7....4..5..5..7..7..7..7....1..7..4..7..7..7..7

%e ..4..6..6..6..6..7..6....6..5..5..7..7..7..7....4..4..7..7..7..7..7

%e ..4..6..6..6..7..6..7....4..7..7..7..7..7..7....2..6..7..7..7..7..7

%e ..7..5..7..7..6..7..7....4..7..7..7..7..7..7....3..7..7..7..7..7..7

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 14 2012

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 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)