A253043 Number of (n+2)X(7+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order

65765, 18180, 25184, 51292, 116466, 262728, 620736, 1399406, 3180688, 7274744, 16952678, 38766416, 88375402, 204157530, 467852370, 1079248186, 2467421138, 5696126304, 12988579062, 30127289430, 68617375036, 158672004024

Offset

1,1

Comments

Column 7 of A253044

Links

R. H. Hardin, Table of n, a(n) for n = 1..86

Example

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

Crossrefs

Sequence in context: A168667 A170781 A063825 * A170790 A043678 A032781

Adjacent sequences: A253040 A253041 A253042 * A253044 A253045 A253046

Keyword

nonn

Author

R. H. Hardin, Dec 26 2014

Status

approved