A195959 Number of nX5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself

1, 5, 21, 25, 33, 93, 92, 229, 468, 795, 1482, 2849, 5272, 10756, 20834, 38985, 77732, 152388, 300791, 600543, 1183238, 2351462, 4735415, 9484441, 19063155, 38456880, 77567644, 157185914, 319230043, 648074014, 1318778072, 2688792495, 5486829630

Offset

1,2

Comments

Column 5 of A195962

Links

R. H. Hardin, Table of n, a(n) for n = 1..300

Example

Some solutions for n=6
..1..3..2..3..1....1..2..3..2..1....1..2..3..2..1....1..3..1..1..1
..1..4..2..4..1....1..2..4..2..1....1..2..2..2..1....1..1..1..4..3
..1..3..2..3..1....1..2..2..2..1....1..3..3..4..1....2..1..1..3..2
..1..3..2..3..1....1..3..3..4..1....1..2..2..2..1....2..1..1..3..2
..1..4..2..4..1....1..2..2..2..1....1..2..4..2..1....1..1..1..4..3
..1..3..2..3..1....1..2..3..2..1....1..2..3..2..1....1..3..1..1..1

Crossrefs

Sequence in context: A350328 A113410 A099654 * A228141 A268527 A176300

Adjacent sequences: A195956 A195957 A195958 * A195960 A195961 A195962

Keyword

nonn

Author

R. H. Hardin Sep 25 2011

Status

approved