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!)
A250906 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element 1

%I #5 Nov 28 2014 12:52:20

%S 74,13401,18077319,181725094746,13614176466285177,

%T 7601083164098734394079,31627738616791159166366474706,

%U 980775577015597559408509097508207843,226662690545871494601898816284099112431799133

%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element

%C Diagonal of A250913

%H R. H. Hardin, <a href="/A250906/b250906.txt">Table of n, a(n) for n = 1..10</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 28 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 June 4 14:20 EDT 2023. Contains 363128 sequences. (Running on oeis4.)