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!)
A251912 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 7 3
49436, 950384, 950384, 18245824, 34096384, 18245824, 351040004, 1228480800, 1228480800, 351040004, 6755376172, 44527823912, 83861378128, 44527823912, 6755376172, 130017259448, 1618348274612, 5801103610852, 5801103610852 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........49436........950384......18245824.....351040004......6755376172
.......950384......34096384....1228480800...44527823912...1618348274612
.....18245824....1228480800...83861378128.5801103610852.405066257896888
....351040004...44527823912.5801103610852
...6755376172.1618348274612
.130017259448
LINKS
EXAMPLE
Some solutions for n=1 k=4
..0..0..0..0..3..3....0..0..0..0..3..3....0..0..3..3..0..0....0..0..1..0..3..3
..0..0..0..3..0..3....0..0..0..3..2..1....0..0..0..0..1..2....0..0..0..1..2..0
..0..0..0..3..0..3....0..1..0..3..1..1....0..1..0..3..2..1....0..3..0..3..1..1
CROSSREFS
Sequence in context: A204227 A205279 A185921 * A251910 A235172 A251026
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 10 2014
STATUS
approved

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 February 21 20:29 EST 2024. Contains 370237 sequences. (Running on oeis4.)