A274957 Number of nX6 0..2 arrays with no element equal to any value at offset (-1,-1) (-2,0) or (0,-2) and new values introduced in order 0..2.

24, 648, 6936, 87780, 1119744, 14362920, 183551766, 2348053596, 30087735576, 385522530402, 4938288770400, 63258857161326, 810399782288934, 10381856146131732, 132997595413557654, 1703779141582413888

Offset

1,1

Comments

Column 6 of A274959.

Links

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

R. H. Hardin, Empirical recurrence of order 81

Formula

Empirical recurrence of order 81 (see link above)

Example

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

Crossrefs

Cf. A274959.

Sequence in context: A208441 A231449 A276246 * A288816 A268473 A367331

Adjacent sequences: A274954 A274955 A274956 * A274958 A274959 A274960

Keyword

nonn

Author

R. H. Hardin, Jul 12 2016

Status

approved