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 A235406 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise 4
 81, 450, 450, 2500, 5916, 2500, 11100, 87902, 87902, 11100, 49284, 924132, 4133417, 924132, 49284, 192474, 9730723, 129700247, 129700247, 9730723, 192474, 751689, 80383489, 4053275322, 12449201480, 4053275322, 80383489, 751689, 2707641 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....81......450........2500..........11100.............49284............192474 ....450.....5916.......87902.........924132...........9730723..........80383489 ...2500....87902.....4133417......129700247........4053275322.......93483052039 ..11100...924132...129700247....12449201480.....1195654062204....83013014302681 ..49284..9730723..4053275322..1195654062204...355919250720186.75777857615647618 .192474.80383489.93483052039.83013014302681.75777857615647618 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=2 k=4 ..0..1..0..0..1....0..0..0..1..0....0..0..0..0..1....0..0..0..1..0 ..0..0..1..1..2....0..1..1..2..1....0..1..2..2..2....1..1..1..1..2 ..0..1..1..2..1....2..2..1..2..2....1..2..2..2..2....1..1..2..0..0 CROSSREFS Column 1 is A204223 Sequence in context: A253375 A204230 A235441 * A253742 A204223 A205215 Adjacent sequences:  A235403 A235404 A235405 * A235407 A235408 A235409 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 10 2014 STATUS approved

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Last modified September 25 04:20 EDT 2021. Contains 347652 sequences. (Running on oeis4.)