A318212 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 46, 125, 698, 4794, 28010, 155972, 921216, 5383356, 31881211, 187710862, 1110567049, 6553672181, 38697180020, 228631932558, 1350171453512, 7975981217341, 47112503458607, 278292360138284, 1643852765729612

Offset

1,1

Comments

Column 6 of A318214.

Links

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

Example

Some solutions for n=5
..0..1..0..0..1..0. .0..1..1..1..1..1. .0..1..0..1..1..1. .0..0..1..0..0..1
..0..0..0..0..0..0. .0..1..0..1..0..1. .1..1..1..1..0..0. .1..0..0..0..1..1
..0..1..1..0..0..1. .0..0..0..0..1..0. .1..1..1..0..1..0. .0..0..0..1..1..0
..1..0..0..0..1..1. .1..0..0..0..0..0. .0..1..0..1..0..0. .1..1..0..0..1..1
..1..0..1..0..0..0. .0..1..0..1..0..1. .1..1..0..0..0..1. .1..0..0..1..1..0

Crossrefs

Cf. A318214.

Sequence in context: A317861 A348786 A318550 * A096947 A042533 A355056

Adjacent sequences: A318209 A318210 A318211 * A318213 A318214 A318215

Keyword

nonn

Author

R. H. Hardin, Aug 21 2018

Status

approved