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

256, 3038, 3038, 33610, 105752, 33610, 344668, 3405756, 3377510, 344668, 3402366, 98555090, 314516602, 97225212, 3402366, 32542312, 2711168860, 25757334784, 25779181084, 2654051460, 32542312, 304784986, 71121044662, 1985139761308

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

R. H. Hardin, Table of n, a(n) for n = 1..49

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

Adjacent sequences: A235662 A235663 A235664 * A235666 A235667 A235668

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 13 2014

Status

approved