A234201 Number of (n+1)X(1+1) 0..5 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 15

104, 440, 1792, 7584, 31552, 133984, 560768, 2386048, 10017536, 42680192, 179558912, 765723136, 3226180608, 13766989312, 58064619520, 247894296576, 1046322720768, 4468555331584, 18871214972928, 80613188575232

Offset

1,1

Comments

Column 1 of A234208

Links

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

Formula

Empirical: a(n) = 36*a(n-2) -396*a(n-4) +1392*a(n-6) -1664*a(n-8) +512*a(n-10)

Example

Some solutions for n=5
..0..4....4..4....2..2....0..1....5..2....2..5....5..2....1..4....4..5....4..4
..3..0....1..0....5..0....5..1....0..2....0..2....5..1....0..4....4..0....1..0
..4..0....4..4....4..4....2..5....2..5....5..2....1..0....4..5....5..4....5..1
..5..4....1..0....0..1....5..1....0..2....1..5....4..4....1..1....0..4....1..0
..0..4....1..5....1..5....2..5....5..2....0..1....5..0....5..0....0..3....4..4
..5..4....2..5....2..5....2..0....0..2....1..5....3..3....1..1....0..4....0..5

Crossrefs

Sequence in context: A234227 A234220 A234208 * A250669 A250691 A250692

Adjacent sequences: A234198 A234199 A234200 * A234202 A234203 A234204

Keyword

nonn

Author

R. H. Hardin, Dec 21 2013

Status

approved