A205926 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero

76, 389, 389, 1828, 2684, 1828, 9144, 15561, 15561, 9144, 43572, 104311, 67372, 104311, 43572, 215294, 625713, 583542, 583542, 625713, 215294, 1035724, 4085161, 2570656, 7177505, 2570656, 4085161, 1035724, 5082472, 25017018, 22176946

Offset

1,1

Comments

Table starts

......76.......389......1828........9144........43572.........215294

.....389......2684.....15561......104311.......625713........4085161

....1828.....15561.....67372......583542......2570656.......22176946

....9144....104311....583542.....7177505.....40724536......535691452

...43572....625713...2570656....40724536....160958484.....2853968414

..215294...4085161..22176946...535691452...2853968414....88272553560

.1035724..25017018..98991836..3047588270..10728448308...454195592550

.5082472.160810946.849405824.42247423238.211429772688.16886828676263

Links

R. H. Hardin, Table of n, a(n) for n = 1..180

Example

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

Crossrefs

Sequence in context: A167586 A234184 A234177 * A205919 A238918 A234786

Adjacent sequences: A205923 A205924 A205925 * A205927 A205928 A205929

Keyword

nonn,tabl

Author

R. H. Hardin Feb 01 2012

Status

approved