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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 9
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 (list; table; graph; refs; listen; history; text; internal format)
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 01 2012
STATUS
approved

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Last modified July 17 21:15 EDT 2024. Contains 374377 sequences. (Running on oeis4.)