A253040 Number of (n+2)X(4+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

2638, 1866, 3119, 5860, 11904, 24232, 51292, 106308, 220782, 459446, 975228, 2051948, 4296456, 8990830, 18974386, 40168988, 84355336, 176912878, 372064076, 789230276, 1658790278, 3487370854, 7319531044, 15513370438, 32648371576

Offset

1,1

Comments

Column 4 of A253044

Links

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

R. H. Hardin, Empirical recurrence of order 82

Formula

Empirical recurrence of order 82 (see link above)

Example

Some solutions for n=4
..0..1..1..2..2..0....0..0..1..1..2..1....0..1..1..2..2..0....0..1..0..0..2..0
..0..2..2..1..1..0....2..1..2..1..1..3....1..1..0..0..2..0....0..0..1..1..2..2
..1..1..2..1..2..1....2..1..1..2..2..3....0..2..0..0..1..1....1..0..1..0..0..2
..1..1..0..0..1..1....1..2..1..2..1..2....0..2..2..1..1..0....1..2..2..0..0..1
..2..0..2..0..2..2....1..1..3..3..2..2....2..0..2..0..0..1....2..2..1..2..1..1
..2..0..0..1..1..2....2..2..3..3..1..1....2..2..1..1..0..0....1..1..2..2..0..0

Crossrefs

Sequence in context: A212605 A273184 A252579 * A157609 A249462 A257183

Adjacent sequences: A253037 A253038 A253039 * A253041 A253042 A253043

Keyword

nonn

Author

R. H. Hardin, Dec 26 2014

Status

approved