A205370 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock the same

256, 1976, 1976, 15616, 31848, 15616, 124048, 516364, 516364, 124048, 986388, 8539884, 17552984, 8539884, 986388, 7854572, 143559116, 629784956, 629784956, 143559116, 7854572, 62623348, 2448719840, 23521828188, 50678667832

Offset

1,1

Comments

Table starts

.......256.........1976............15616..............124048

......1976........31848...........516364.............8539884

.....15616.......516364.........17552984...........629784956

....124048......8539884........629784956.........50678667832

....986388....143559116......23521828188.......4285363828968

...7854572...2448719840.....902946068592.....371408707521176

..62623348..42290474776...35270352008656...32556374834342020

.499915248.737993545372.1392432201867300.2868254295614429464

Links

R. H. Hardin, Table of n, a(n) for n = 1..97

Example

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

Crossrefs

Sequence in context: A235972 A235965 A206188 * A205659 A205363 A237340

Adjacent sequences: A205367 A205368 A205369 * A205371 A205372 A205373

Keyword

nonn,tabl

Author

R. H. Hardin Jan 26 2012

Status

approved