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A208492 T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases. 9
152, 1448, 1448, 13800, 33416, 13800, 131528, 773288, 773288, 131528, 1253608, 17903016, 43689232, 17903016, 1253608, 11948296, 414522184, 2473041560, 2473041560, 414522184, 11948296, 113880744, 9597910280, 140051200968 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........152..........1448.............13800................131528
.......1448.........33416............773288..............17903016
......13800........773288..........43689232............2473041560
.....131528......17903016........2473041560..........343092183768
....1253608.....414522184......140051200968........47661128330328
...11948296....9597910280.....7932164084608......6623652903138136
..113880744..222232271912...449271828443912....920635760474340792
.1085412040.5145622169576.25446613122575176.127966524262127129240
LINKS
EXAMPLE
Some solutions for n=4, k=3:
..3..2..0..1....0..3..3..3....1..0..3..3....1..1..0..0....0..0..1..2
..0..3..1..1....2..1..1..1....3..2..1..3....3..1..0..0....0..3..0..1
..3..2..3..1....0..2..1..0....2..2..2..0....1..0..1..0....1..0..1..2
..1..3..2..0....3..0..2..1....3..2..2..0....2..1..1..0....1..1..0..1
..1..3..2..0....3..3..0..3....1..3..2..2....2..2..1..1....1..0..3..0
CROSSREFS
Sequence in context: A253359 A226365 A085775 * A208485 A364815 A359447
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 27 2012
STATUS
approved

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Last modified May 22 15:18 EDT 2024. Contains 372758 sequences. (Running on oeis4.)