A251909 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 4 or 5

9552, 87472, 87472, 910694, 1524496, 910694, 9385210, 31829596, 31829596, 9385210, 97416802, 634891856, 1346875728, 634891856, 97416802, 1020849168, 13021221976, 55159959296, 55159959296, 13021221976, 1020849168, 10715275730

Offset

1,1

Comments

Table starts

.........9552.........87472..........910694.........9385210........97416802

........87472.......1524496........31829596.......634891856.....13021221976

.......910694......31829596......1346875728.....55159959296...2346358649878

......9385210.....634891856.....55159959296...4659453629112.405801426711494

.....97416802...13021221976...2346358649878.405801426711494

...1020849168..273455709590.101807826393734

..10715275730.5736244294410

.112555491252

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

Some solutions for n=1 k=4
..1..1..1..1..3..1....2..3..3..3..3..2....3..3..3..3..2..3....1..1..1..3..1..1
..1..1..1..1..1..1....3..3..3..3..3..3....3..2..3..3..3..2....3..1..1..1..1..3
..1..1..1..1..1..1....3..3..3..3..2..3....3..3..3..3..3..3....1..1..1..1..1..1

Crossrefs

Sequence in context: A232189 A271046 A162029 * A251906 A223367 A136476

Adjacent sequences: A251906 A251907 A251908 * A251910 A251911 A251912

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 10 2014

Status

approved