A218761 Unmatched value maps: number of n X 4 binary arrays indicating the locations of corresponding elements not equal to any horizontal or vertical neighbor in a random 0..1 n X 4 array.

7, 47, 403, 2942, 22439, 170148, 1291662, 9807350, 74441043, 565067801, 4289417212, 32560993753, 247169557952, 1876254744847, 14242588588406, 108115048685864, 820697944019795, 6229892072413748, 47290913215565827

Offset

1,1

Comments

Column 4 of A218765.

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

Some solutions for n=3
..1..0..0..0....0..0..0..1....0..1..0..1....0..0..1..0....1..0..1..1
..0..0..0..1....0..0..0..1....0..0..0..0....1..0..0..0....0..0..0..0
..0..0..0..0....1..1..0..0....1..0..1..0....0..0..1..0....1..0..0..0

Crossrefs

Cf. A218765.

Sequence in context: A349255 A093173 A368177 * A173772 A178002 A288722

Adjacent sequences: A218758 A218759 A218760 * A218762 A218763 A218764

Keyword

nonn

Author

R. H. Hardin, Nov 05 2012

Status

approved