A231414 Number of (n+1)X(2+1) 0..2 arrays with no element equal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order

71, 1032, 15125, 221445, 3245016, 47557773, 697029563, 10216062982, 149732672641, 2194570662617, 32164925750976, 471428170136401, 6909529986297263, 101270156563366358, 1484275287919713541

Offset

1,1

Comments

Column 2 of A231419

Links

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

Formula

Empirical: a(n) = 17*a(n-1) -28*a(n-2) -119*a(n-3) +373*a(n-4) +134*a(n-5) -268*a(n-6) -200*a(n-7)

Example

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

Crossrefs

Sequence in context: A050885 A200909 A175215 * A071827 A289899 A267475

Adjacent sequences: A231411 A231412 A231413 * A231415 A231416 A231417

Keyword

nonn

Author

R. H. Hardin, Nov 08 2013

Status

approved