A251908 Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5.

910694, 31829596, 1346875728, 55159959296, 2346358649878, 101807826393734, 4420398895384686, 192602542367733540, 8418267573435319288, 368433628593845084758, 16142671439953491545132, 707955307957030465592450

Offset

1,1

Comments

Column 3 of A251909

Links

R. H. Hardin, Table of n, a(n) for n = 1..37

Example

Some solutions for n=1
..1..1..1..1..1....1..1..1..1..1....1..1..3..1..1....1..1..1..1..1
..1..1..1..1..3....1..1..1..1..1....1..1..1..1..3....3..1..1..1..1
..1..1..1..3..1....1..3..1..1..1....1..1..1..3..1....1..1..3..1..1

Crossrefs

Sequence in context: A141461 A035793 A102503 * A186608 A236617 A237155

Adjacent sequences: A251905 A251906 A251907 * A251909 A251910 A251911

Keyword

nonn

Author

R. H. Hardin, Dec 10 2014

Status

approved