A275094 Number of 6Xn 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.

122, 17496, 29120, 111900, 647648, 5038428, 38872396, 303675960, 2423227760, 19202061888, 152553328244, 1215089208420, 9668080103560, 76882965502680, 612018920913868, 4870269177219740, 38747349177636904, 308437956528230860

Offset

1,1

Comments

Row 6 of A275090.

Links

R. H. Hardin, Table of n, a(n) for n = 1..171

Example

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

Crossrefs

Cf. A275090.

Sequence in context: A097843 A223385 A241375 * A275350 A208565 A209098

Adjacent sequences: A275091 A275092 A275093 * A275095 A275096 A275097

Keyword

nonn

Author

R. H. Hardin, Jul 16 2016

Status

approved