A234203 Number of (n+1)X(3+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.

1792, 6644, 24480, 104276, 429552, 1961124, 8457288, 40227192, 177596408, 869944940, 3897050760, 19544785456, 88459585904, 452452111416, 2063740385320, 10730294765068, 49237798358136, 259502500277884, 1196340040955336

Offset

1,1

Comments

Column 3 of A234208

Links

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

Example

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

Crossrefs

Sequence in context: A207316 A206699 A249191 * A220058 A235898 A035891

Adjacent sequences: A234200 A234201 A234202 * A234204 A234205 A234206

Keyword

nonn

Author

R. H. Hardin, Dec 21 2013

Status

approved