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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

R. H. Hardin, Table of n, a(n) for n = 1..24

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

Adjacent sequences:  A251909 A251910 A251911 * A251913 A251914 A251915

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 10 2014

STATUS

approved

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Last modified May 25 03:36 EDT 2022. Contains 354047 sequences. (Running on oeis4.)