login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213804 Number of 6X6 0..n symmetric arrays with all rows summing to 3*n 0

%I

%S 1760,526443,34725760,932587453,13937940952,138198204339,

%T 1012226679296,5875958390949,28376054552968,118033137259563,

%U 433946033473016

%N Number of 6X6 0..n symmetric arrays with all rows summing to 3*n

%C Row 6 of A213800

%e Some solutions for n=4

%e ..2..4..0..4..0..2....2..4..3..3..0..0....2..1..3..0..2..4....2..0..2..3..1..4

%e ..4..1..2..4..0..1....4..3..3..1..0..1....1..2..4..3..0..2....0..4..3..3..1..1

%e ..0..2..3..0..4..3....3..3..3..2..0..1....3..4..1..2..0..2....2..3..3..0..3..1

%e ..4..4..0..2..0..2....3..1..2..0..4..2....0..3..2..3..3..1....3..3..0..0..3..3

%e ..0..0..4..0..4..4....0..0..0..4..4..4....2..0..0..3..4..3....1..1..3..3..2..2

%e ..2..1..3..2..4..0....0..1..1..2..4..4....4..2..2..1..3..0....4..1..1..3..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 20 2012

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)