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!)
A250526 Number of (n+1)X(7+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction 1

%I #4 Nov 24 2014 20:08:22

%S 112373,682921,2771901,9240559,27710543,78204775,212707851,565044857,

%T 1478308633,3832617341,9897332961,25578008747,66435440107,

%U 174080131035,461563409759,1240974976389,3386986664197,9384561755841,26376931311941

%N Number of (n+1)X(7+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction

%C Column 7 of A250527

%H R. H. Hardin, <a href="/A250526/b250526.txt">Table of n, a(n) for n = 1..194</a>

%F Empirical: a(n) = 14*a(n-1) -85*a(n-2) +294*a(n-3) -639*a(n-4) +906*a(n-5) -839*a(n-6) +490*a(n-7) -164*a(n-8) +24*a(n-9)

%e Some solutions for n=1

%e ..1..0..1..2..0..0..0..0....2..1..2..1..1..0..1..1....2..1..2..2..0..1..0..0

%e ..0..0..1..2..0..1..1..2....0..0..1..1..1..0..1..2....1..0..1..1..1..2..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 24 2014

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 24 14:32 EDT 2024. Contains 371960 sequences. (Running on oeis4.)