A209097 Number of n X 5 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

41, 3552, 329064, 30836932, 2896732704, 272236743760, 25586970618660, 2404896311723064, 226034468180738520, 21244822678014930356, 1996786217098139769792, 187676559324985292352416

Offset

1,1

Comments

Column 5 of A209100.

Links

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

Formula

Empirical: a(n) = 121*a(n-1) -2777*a(n-2) +23322*a(n-3) -88925*a(n-4) +181863*a(n-5) -277613*a(n-6) +499822*a(n-7) -787540*a(n-8) +679392*a(n-9) -232128*a(n-10) for n>12.

Example

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

Crossrefs

Cf. A209100.

Sequence in context: A215826 A167246 A208564 * A233015 A282054 A107690

Adjacent sequences: A209094 A209095 A209096 * A209098 A209099 A209100

Keyword

nonn

Author

R. H. Hardin, Mar 05 2012

Status

approved