A252342 Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4

5706, 46154, 413478, 3338572, 26921266, 220263010, 1793526072, 14603098032, 119141197236, 970914856560, 7908180946110, 64445220210966, 525255370174422, 4280374713230132, 34879216328489506, 284228789406515474

Offset

1,1

Comments

Column 7 of A252343

Links

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

Example

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

Crossrefs

Sequence in context: A184147 A235207 A355317 * A237743 A025027 A030469

Adjacent sequences: A252339 A252340 A252341 * A252343 A252344 A252345

Keyword

nonn

Author

R. H. Hardin, Dec 16 2014

Status

approved