A252030 Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4

4259, 14831, 85199, 541544, 3560831, 23454804, 153768348, 1007751301, 6615116021, 43445771467, 285305534351, 1873609561507, 12305294821533, 80822493213337, 530855803548973, 3486726107215819, 22901307615446511

Offset

1,1

Comments

Column 6 of A252032

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..1..2....2..1..2..2..2..2..2..2....1..2..2..1..2..2..1..2
..2..2..2..1..2..2..2..2....2..2..2..2..2..2..2..1....2..2..2..2..2..2..2..2
..2..2..2..2..2..2..2..2....2..2..2..2..2..2..2..2....2..2..2..2..2..2..2..2
..1..2..2..2..2..2..1..2....1..2..2..2..2..2..2..2....2..2..2..2..2..2..2..1
..2..2..2..1..2..2..2..2....2..1..2..2..1..2..2..2....2..2..1..2..2..1..2..2

Crossrefs

Sequence in context: A031985 A138399 A224725 * A371569 A023346 A231195

Adjacent sequences: A252027 A252028 A252029 * A252031 A252032 A252033

Keyword

nonn

Author

R. H. Hardin, Dec 12 2014

Status

approved