A252218 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7

14627, 47580, 420596, 3410786, 27565870, 225314934, 1834743852, 14935638689, 121853394501, 993165752194, 8089640891856, 65918907448848, 537257266754775, 4378309348730447, 35677643317164637, 290732203739079765

Offset

1,1

Comments

Column 7 of A252219

Links

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

Example

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

Crossrefs

Sequence in context: A153428 A032736 A032738 * A133858 A023683 A231118

Adjacent sequences: A252215 A252216 A252217 * A252219 A252220 A252221

Keyword

nonn

Author

R. H. Hardin, Dec 15 2014

Status

approved