A209796 T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference

30, 204, 204, 1380, 3171, 1380, 9348, 49056, 49056, 9348, 63300, 759642, 1732554, 759642, 63300, 428676, 11761044, 61289190, 61289190, 11761044, 428676, 2902980, 182095128, 2167312950, 4953638163, 2167312950, 182095128, 2902980, 19659012

Offset

1,1

Comments

Table starts

.......30.........204...........1380...............9348.................63300

......204........3171..........49056.............759642..............11761044

.....1380.......49056........1732554...........61289190............2167312950

.....9348......759642.......61289190.........4953638163..........400252237467

....63300....11761044.....2167312950.......400252237467........73890766377408

...428676...182095128....76648760118.....32342700329739.....13642480312938969

..2902980..2819342124..2710658447034...2613436161921981...2518750352620857312

.19659012.43651363500.95862567834618.211178329470822063.465030007730370004089

Links

R. H. Hardin, Table of n, a(n) for n = 1..264

Example

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

Crossrefs

Sequence in context: A200548 A165030 A165016 * A209789 A280482 A371721

Adjacent sequences: A209793 A209794 A209795 * A209797 A209798 A209799

Keyword

nonn,tabl

Author

R. H. Hardin Mar 13 2012

Status

approved