A252031 Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4

10251, 41745, 295050, 2306234, 18791972, 153768348, 1251157837, 10174456397, 82884616652, 675475186716, 5504198490443, 44853334188524, 365538950132042, 2979206212366520, 24281462696980672, 197899102273824479

Offset

1,1

Comments

Column 7 of A252032

Links

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

Example

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

Crossrefs

Sequence in context: A187796 A157735 A332532 * A356979 A187311 A289855

Adjacent sequences: A252028 A252029 A252030 * A252032 A252033 A252034

Keyword

nonn

Author

R. H. Hardin, Dec 12 2014

Status

approved