A231467 Number of (4+1)X(n+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order

12, 20, 272, 1096, 8426, 57426, 367803, 2845485, 20018093, 150949412, 1177693211, 8931183872, 71580272704, 565415811806, 4521022021693, 36638382301846, 294985330832346, 2401765918095904, 19540533876057217, 159156617785973772

Offset

1,1

Comments

Row 4 of A231463

Links

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

Example

Some solutions for n=7
..0..0..1..1..1..1..2..2....0..0..0..0..0..1..1..2....0..1..1..1..1..0..0..0
..0..0..0..1..1..2..2..2....0..0..0..0..1..1..2..1....0..0..1..1..0..1..1..1
..0..0..0..2..2..2..2..2....0..0..0..1..1..2..1..2....0..0..0..0..0..0..1..1
..0..0..2..2..2..2..3..3....0..0..1..1..2..2..2..1....0..0..0..0..0..1..1..1
..0..0..0..2..2..3..3..3....0..0..1..1..2..2..1..1....0..0..0..0..0..1..1..1

Crossrefs

Sequence in context: A060159 A167351 A231400 * A078600 A076638 A129939

Adjacent sequences: A231464 A231465 A231466 * A231468 A231469 A231470

Keyword

nonn

Author

R. H. Hardin, Nov 09 2013

Status

approved