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!)
A252455 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 4 6 or 7 1

%I #4 Dec 17 2014 12:45:51

%S 3938,20242,134907,863351,5596619,36760486,240708592,1577703429,

%T 10367458379,68072122171,446783070387,2933845046205,19268013875675,

%U 126527744827003,830860795856980,5456160445875431,35830272826754996

%N Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 4 6 or 7

%C Column 6 of A252457

%H R. H. Hardin, <a href="/A252455/b252455.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..2..3..3..3..2..3..3..3....3..3..3..2..3..3..2..3....2..3..3..3..3..3..3..2

%e ..3..3..3..3..3..3..3..3....2..3..3..3..3..3..3..3....3..3..3..3..3..3..3..3

%e ..3..3..3..3..3..2..3..3....3..3..3..3..3..3..3..3....3..3..3..2..3..3..3..3

%e ..3..3..3..3..3..3..3..2....3..3..3..3..3..2..3..3....3..3..3..3..3..3..3..2

%e ..3..3..2..3..3..3..2..3....3..2..3..3..3..3..3..3....3..3..3..3..3..3..3..3

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 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 September 5 00:56 EDT 2024. Contains 375685 sequences. (Running on oeis4.)