A275041 Number of 6Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.

24, 486, 1428, 9774, 64045, 421793, 2788663, 18527905, 123270618, 820404834, 5457383302, 36311630844, 241731826979, 1609452326761, 10715001495226, 71339194326992, 475007005017394, 3162779499787860, 21058326900918297

Offset

1,1

Comments

Row 6 of A275037.

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above)

Example

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

Crossrefs

Cf. A275037.

Sequence in context: A006548 A159877 A319426 * A109143 A260964 A186863

Adjacent sequences: A275038 A275039 A275040 * A275042 A275043 A275044

Keyword

nonn

Author

R. H. Hardin, Jul 14 2016

Status

approved