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A251442 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the minimum of its diagonal elements greater than the absolute difference of its antidiagonal elements 8
192, 2312, 2312, 27486, 86930, 27486, 327033, 3204536, 3204536, 327033, 3888017, 119053429, 360591824, 119053429, 3888017, 46227589, 4414109389, 41060404870, 41060404870, 4414109389, 46227589, 549607078, 163787201307, 4653177899915 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.....192.......2312.........27486...........327033.............3888017
....2312......86930.......3204536........119053429..........4414109389
...27486....3204536.....360591824......41060404870.......4653177899915
..327033..119053429...41060404870...14434973166138....5038742133151250
.3888017.4414109389.4653177899915.5038742133151250.5400094007696295470
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 10]
k=2: [order 41]
EXAMPLE
Some solutions for n=2 k=4
..0..0..0..1..3....0..0..0..0..3....0..0..0..2..1....0..0..0..1..2
..0..2..0..1..3....0..0..0..3..3....0..2..2..0..1....0..0..0..1..3
..0..0..0..2..1....0..2..3..0..1....0..0..1..1..0....0..0..1..1..2
CROSSREFS
Sequence in context: A051526 A188786 A362510 * A251435 A183710 A183702
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)