A219421 T(n,k)=Unchanging value maps: number of nXk binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 nXk array.

1, 2, 1, 4, 7, 1, 7, 20, 21, 1, 12, 57, 93, 65, 1, 21, 160, 453, 436, 200, 1, 37, 454, 2121, 3617, 2043, 616, 1, 65, 1292, 9926, 28154, 28888, 9573, 1897, 1, 114, 3676, 46776, 218838, 372560, 230726, 44857, 5842, 1, 200, 10452, 220655, 1709703, 4775307

Offset: 1

Author

R. H. Hardin Nov 19 2012

Keywords

• nonn
• tabl

Comments

Table starts

.1......2.........4...........7.............12................21

.1......7........20..........57............160...............454

.1.....21........93.........453...........2121..............9926

.1.....65.......436........3617..........28154............218838

.1....200......2043.......28888.........372560...........4775307

.1....616......9573......230726........4934366.........104434119

.1...1897.....44857.....1842766.......65352789........2284814260

.1...5842....210190....14717828......865523957.......49979133672

.1..17991....984904...117548611....11462977378.....1093274545336

.1..55405...4615043...938839259...151815415029....23915155162485

.1.170625..21625074..7498337380..2010639231109...523138192294728

.1.525456.101330329.59887849061.26628853182336.11443519356879492

Examples

			Some solutions for n=3 k=4
..1..0..0..1....0..0..1..0....1..1..0..0....1..1..0..0....1..0..0..1
..0..1..1..1....0..0..0..0....0..0..1..1....0..0..0..0....1..0..0..0
..1..1..1..1....1..0..1..1....0..0..0..0....0..0..0..0....1..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..178

Crossrefs

Column 2 is A218836

Column 3 is A218837

Column 4 is A218838

Row 1 is A005251(n+2)