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!)
A254722 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically 1

%I

%S 2630,14226,76615,364039,1645201,7620738,35110289,160937385,741804750,

%T 3423993877,15810300788,73052896500,337690620252,1561140321305,

%U 7217837292719,33373602812501,154315577978901,713547491791682

%N Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically

%C Column 2 of A254728

%H R. H. Hardin, <a href="/A254722/b254722.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A254722/a254722.txt">Empirical recurrence of order 75</a>

%F Empirical recurrence of order 75 (see link above)

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 06 2015

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 May 24 14:36 EDT 2022. Contains 354037 sequences. (Running on oeis4.)