A252513 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7

17709, 231372, 767176, 1808374, 5219625, 17585706, 59046724, 209788816, 715958046, 2479308557, 9956085785, 36534703306, 134720021233, 603603095063, 2333291306912, 8984713129479, 43067974596056, 171022136230496

Offset

1,1

Comments

Column 7 of A252514

Links

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

Example

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

Crossrefs

Sequence in context: A165598 A187641 A252624 * A328868 A322552 A235023

Adjacent sequences: A252510 A252511 A252512 * A252514 A252515 A252516

Keyword

nonn

Author

R. H. Hardin, Dec 18 2014

Status

approved