A252368 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7

6954, 48034, 427362, 3482672, 28210122, 230366506, 1875961304, 15268178994, 124565591414, 1015416647500, 8271100837250, 67392594686378, 549259163334800, 4476243984230410, 36476070305839416, 297235618071643728

Offset

1,1

Comments

Column 7 of A252369

Links

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

Example

Some solutions for n=2
..3..2..3..3..3..3..3..3..2....0..0..0..0..0..0..0..0..2
..3..3..3..3..3..3..3..3..3....0..0..0..0..0..0..0..0..0
..3..3..2..3..3..3..3..3..3....2..0..0..2..0..0..0..0..0
..3..3..3..3..3..3..3..2..3....0..0..0..0..0..0..0..0..2

Crossrefs

Sequence in context: A252432 A072870 A183666 * A237468 A028542 A263287

Adjacent sequences: A252365 A252366 A252367 * A252369 A252370 A252371

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved