A252602 Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5

6709, 18454, 71730, 318274, 1547711, 7784629, 39981376, 208234989, 1092285060, 5754373518, 30374878110, 160469301012, 848397475346, 4487504454469, 23739361018235, 125592863117105, 664493298038144, 3515885783465887

Offset

1,1

Comments

Column 5 of A252605

Links

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

Example

Some solutions for n=3
..2..2..2..2..2..2..2....2..2..0..1..2..0..1....2..2..0..2..2..2..2
..2..2..2..0..2..2..0....2..0..2..2..0..1..2....2..2..2..2..2..2..2
..2..0..2..2..2..2..2....0..1..2..0..1..2..0....2..0..2..2..2..2..0
..2..2..2..2..2..2..2....1..2..0..2..2..0..2....2..2..2..2..2..0..2
..2..2..0..2..2..0..2....2..0..1..2..0..2..2....0..2..2..2..0..2..2

Crossrefs

Sequence in context: A289516 A239565 A234242 * A224689 A190292 A164972

Adjacent sequences: A252599 A252600 A252601 * A252603 A252604 A252605

Keyword

nonn

Author

R. H. Hardin, Dec 19 2014

Status

approved