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!)
A203894 Number of (n+1)X7 0..4 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing 0

%I #4 Mar 31 2012 12:36:58

%S 6287755,40229386532,909510089895106,18604524788467098072,

%T 304473777397661322628561

%N Number of (n+1)X7 0..4 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing

%C Column 6 of A203896

%e Some solutions for n=4

%e ..4..4..4..4..4..4..4....3..1..0..2..4..1..1....1..4..1..3..2..1..3

%e ..4..4..4..4..4..4..4....1..3..4..2..1..4..4....4..1..4..2..3..4..4

%e ..4..4..4..4..4..4..4....2..3..2..4..0..2..3....1..4..2..4..3..4..1

%e ..4..4..4..4..4..4..4....2..3..4..3..2..2..3....1..4..3..3..4..2..4

%e ..4..4..4..4..4..4..4....2..3..4..4..2..0..3....4..2..1..3..3..3..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 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 April 28 09:05 EDT 2024. Contains 372020 sequences. (Running on oeis4.)