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A206318 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 two, and every 2X2 determinant nonzero 9
112, 873, 873, 6831, 14990, 6831, 53463, 258452, 258452, 53463, 418468, 4466450, 9841886, 4466450, 418468, 3275406, 77132181, 375274347, 375274347, 77132181, 3275406, 25637095, 1332632711, 14309749540, 31585648103, 14309749540 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......112..........873............6831...............53463

.......873........14990..........258452.............4466450

......6831.......258452.........9841886...........375274347

.....53463......4466450.......375274347.........31585648103

....418468.....77132181.....14309749540.......2656145209648

...3275406...1332632711....545678293613.....223458785606871

..25637095..23019152735..20808377921080...18792437854613234

.200665376.397663246671.793485464714845.1580709874695673480

LINKS

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

EXAMPLE

Some solutions for n=4 k=3

..2..0..2..3....0..1..0..1....0..1..3..3....3..0..1..1....0..1..2..3

..0..1..0..1....1..0..3..3....1..3..1..0....1..1..3..2....1..3..1..2

..2..2..1..3....3..2..1..0....3..2..0..1....3..2..0..3....3..0..2..3

..0..3..2..0....0..3..2..1....2..0..3..3....2..3..1..0....1..1..0..2

..1..0..3..1....1..0..3..2....1..2..1..0....1..1..0..1....0..2..1..3

CROSSREFS

Sequence in context: A203796 A203789 A211448 * A206311 A343372 A330418

Adjacent sequences:  A206315 A206316 A206317 * A206319 A206320 A206321

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 06 2012

STATUS

approved

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Last modified December 7 15:24 EST 2021. Contains 349581 sequences. (Running on oeis4.)