A221072 T(n,k)=Sum of neighbor maps: number of nXk binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nXk array

2, 2, 2, 8, 8, 8, 16, 20, 20, 16, 24, 56, 512, 56, 24, 64, 168, 4096, 4096, 168, 64, 128, 476, 26976, 65536, 26976, 476, 128, 232, 1364, 262144, 829184, 829184, 262144, 1364, 232, 512, 3952, 2097152, 16777216, 17530176, 16777216, 2097152, 3952, 512, 1024, 11360

Offset

1,1

Comments

Table starts

....2.....2.........8.........16..........24..........64.........128........232

....2.....8........20.........56.........168.........476........1364.......3952

....8....20.......512.......4096.......26976......262144.....2097152...16401664

...16....56......4096......65536......829184....16777216...268435456.4185880576

...24...168.....26976.....829184....17530176...811440640.25241048576

...64...476....262144...16777216...811440640.68719476736

..128..1364...2097152..268435456.25241048576

..232..3952..16401664.4185880576

..512.11360.134217728

.1024.32692

.1984

Links

R. H. Hardin, Table of n, a(n) for n = 1..70

Example

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

Crossrefs

Column 1 is A220172

Sequence in context: A264605 A353245 A275928 * A339162 A360808 A168272

Adjacent sequences: A221069 A221070 A221071 * A221073 A221074 A221075

Keyword

nonn,tabl

Author

R. H. Hardin Dec 31 2012

Status

approved