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A235665 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 7
256, 3038, 3038, 33610, 105752, 33610, 344668, 3405756, 3377510, 344668, 3402366, 98555090, 314516602, 97225212, 3402366, 32542312, 2711168860, 25757334784, 25779181084, 2654051460, 32542312, 304784986, 71121044662, 1985139761308 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.......256..........3038............33610.............344668............3402366
......3038........105752..........3405756...........98555090.........2711168860
.....33610.......3377510........314516602........25757334784......1985139761308
....344668......97225212......25779181084......6040295484562...1339343216343068
...3402366....2654051460....1970890033598...1320671371671620.853330948388289724
..32542312...69130583300..141161012840294.269317565241096158
.304784986.1747603214578.9652126935575732
LINKS
EXAMPLE
Some solutions for n=2 k=4
..0..1..0..2..0....0..1..1..1..2....0..1..3..3..1....0..0..1..0..0
..0..0..1..1..0....0..0..0..1..3....0..0..0..3..0....0..0..0..0..3
..0..0..0..1..1....0..0..0..0..2....0..0..0..2..0....0..0..0..2..1
CROSSREFS
Column 1 and Row 1 are A235426
Sequence in context: A188823 A205935 A205928 * A235430 A235426 A236299
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 13 2014
STATUS
approved

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Last modified May 23 21:14 EDT 2024. Contains 372765 sequences. (Running on oeis4.)