A232152 Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally

1, 887, 67311, 3409361, 191897041, 11346946019, 663248443295, 38578051319991, 2246283227163449, 130862879072024301, 7622964864814416035, 444025298198899334745, 25864000876540165953917, 1506559074693480517741153

Offset

1,2

Comments

Row 4 of A232149

Links

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

R. H. Hardin, Empirical recurrence of order 58

Formula

Empirical recurrence of order 58 (see link above)

Example

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

Crossrefs

Sequence in context: A165504 A351667 A136966 * A202446 A043523 A066270

Adjacent sequences: A232149 A232150 A232151 * A232153 A232154 A232155

Keyword

nonn

Author

R. H. Hardin, Nov 19 2013

Status

approved