A282157 Number of nX4 0..2 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 82, 37560, 680348, 12543514, 171142988, 2215087379, 26310131648, 298319340360, 3260405598180, 34588846625658, 358871483776020, 3652908155885933, 36615265722360746, 362197960230285674

Offset

1,2

Comments

Column 4 of A282159.

Links

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

Example

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

Crossrefs

Cf. A282159.

Sequence in context: A241129 A394374 A289330 * A176024 A204976 A204703

Adjacent sequences: A282154 A282155 A282156 * A282158 A282159 A282160

Keyword

nonn

Author

R. H. Hardin, Feb 07 2017

Status

approved