A210077 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or three distinct clockwise edge differences

33, 313, 313, 2908, 7653, 2908, 27129, 183628, 183628, 27129, 252951, 4437262, 11333893, 4437262, 252951, 2358878, 107248254, 707627792, 707627792, 107248254, 2358878, 21997263, 2593403383, 44179487805, 114628150378, 44179487805

Offset

1,1

Comments

Table starts

........33...........313..............2908................27129

.......313..........7653............183628..............4437262

......2908........183628..........11333893............707627792

.....27129.......4437262.........707627792.........114628150378

....252951.....107248254.......44179487805.......18568897568014

...2358878....2593403383.....2759914868891.....3010470408635630

..21997263...62718516080...172422974616663...488107505505461510

.205132657.1516857228897.10772379159246366.79144584564609543464

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

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

Crossrefs

Sequence in context: A297492 A256109 A241966 * A210070 A258638 A081932

Adjacent sequences: A210074 A210075 A210076 * A210078 A210079 A210080

Keyword

nonn,tabl

Author

R. H. Hardin Mar 17 2012

Status

approved