A252341 Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4

2612, 16676, 120474, 783852, 5095514, 33579112, 220263010, 1445238050, 9499896738, 62363110396, 409253750110, 2687245485236, 17645641496624, 115847611903874, 760564844163094, 4993528184780362, 32785332046878500

Offset

1,1

Comments

Column 6 of A252343

Links

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

R. H. Hardin, Empirical recurrence of order 71

Formula

Empirical recurrence of order 71 (see link above)

Example

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

Crossrefs

Sequence in context: A254695 A054258 A236666 * A235777 A235557 A257427

Adjacent sequences: A252338 A252339 A252340 * A252342 A252343 A252344

Keyword

nonn

Author

R. H. Hardin, Dec 16 2014

Status

approved