The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A256903 Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically 1

%I #4 Apr 12 2015 08:55:12

%S 914320,2401667,9929098,14332984,12230530,19349729,20860406,34612866,

%T 56629422,96884013,164216100,280399415,479288812,810631770,1364127314,

%U 2275767628,3760495718,6152622928,9960095836,15954540794,25284758668

%N Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically

%C Column 7 of A256904

%H R. H. Hardin, <a href="/A256903/b256903.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%Y Cf. A256904

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 12 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 16 08:41 EDT 2024. Contains 372552 sequences. (Running on oeis4.)