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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 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

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Last modified April 3 14:12 EDT 2020. Contains 333197 sequences. (Running on oeis4.)