A251856 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 more

245388, 10413561, 486474024, 20861600041, 909671877740, 40053572127963, 1755749523989973, 76977213958469471, 3377527287736716648, 148155975079302386926, 6498607593471598478448, 285071555261664151532724

Offset

1,1

Comments

Column 3 of A251858

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..0..0..0..1..1....0..0..1..2..0....1..1..0..0..0....0..1..2..0..1
..0..2..1..0..2....1..1..1..0..2....1..0..0..1..2....0..0..1..0..2
..0..1..0..1..0....0..0..0..1..1....0..0..1..1..0....0..1..0..0..0

Crossrefs

Sequence in context: A347890 A187771 A233632 * A146544 A237313 A321039

Adjacent sequences: A251853 A251854 A251855 * A251857 A251858 A251859

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved