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!)
A252063 Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 4 1

%I #6 Dec 13 2014 16:56:18

%S 4569,15593,86642,539063,3510697,23078709,151165482,990282975,

%T 6500999078,42695261900,280354928528,1841087610030,12091932688086,

%U 79421178920973,521649705581976,3426264313454633,22504261859751322,147812595120131028

%N Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 4

%C Column 6 of A252065

%H R. H. Hardin, <a href="/A252063/b252063.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 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 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)