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 A235441 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 4
 81, 450, 450, 2500, 5295, 2500, 11100, 65497, 65497, 11100, 49284, 606279, 1762344, 606279, 49284, 192474, 5672018, 37115629, 37115629, 5672018, 192474, 751689, 42941705, 785712765, 1957598978, 785712765, 42941705, 751689, 2707641 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......81.........450..........2500...........11100............49284 ......450........5295.........65497..........606279..........5672018 .....2500.......65497.......1762344........37115629........785712765 ....11100......606279......37115629......1957598978.....105025440136 ....49284.....5672018.....785712765....105025440136...14016254732529 ...192474....42941705...13504013024...4689618011086.1644246638168226 ...751689...326261718..235332193767.213149442840795 ..2707641..2114123393.3433774399772 ..9753129.13717203464 .33291180 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=2 k=4 ..2..0..0..0..0....1..1..0..2..0....1..0..0..1..0....0..0..0..0..0 ..2..1..2..0..0....1..1..0..0..0....2..2..1..1..1....1..2..0..0..0 ..0..2..2..0..1....0..2..2..1..0....1..0..1..1..0....2..1..0..1..0 CROSSREFS Column 1 is A204223 Sequence in context: A253749 A253375 A204230 * A235406 A253742 A204223 Adjacent sequences: A235438 A235439 A235440 * A235442 A235443 A235444 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 10 2014 STATUS approved

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Last modified September 30 21:59 EDT 2023. Contains 365812 sequences. (Running on oeis4.)