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 A235833 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 9
 81, 549, 549, 3459, 8160, 3459, 20537, 112146, 110923, 20537, 118383, 1403872, 3294824, 1378463, 118383, 668041, 16791083, 87473420, 87276535, 16385455, 668041, 3720671, 193298612, 2193348247, 4948377018, 2183863895, 187651928 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ........81..........549...........3459...........20537...........118383 .......549.........8160.........112146.........1403872.........16791083 ......3459.......110923........3294824........87473420.......2193348247 .....20537......1378463.......87276535......4948377018.....265469754317 ....118383.....16385455.....2183863895....264596677243...30753132992706 ....668041....187651928....51823058334..13346776888685.3381137131414373 ...3720671...2100282123..1185755777410.644799592944959 ..20536617..23113626964.26334832022372 .112678583.251566008413 .615713801 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 FORMULA Empirical for column k: k=1: [linear recurrence of order 14] k=2: [order 84] Empirical for row n: n=1: [linear recurrence of order 14] n=2: [order 84] EXAMPLE Some solutions for n=2 k=4 ..2..0..0..0..0....2..0..0..2..1....2..0..0..1..0....0..0..0..0..0 ..1..1..1..1..1....1..1..1..0..1....1..1..1..2..1....1..1..2..1..1 ..2..0..0..1..0....1..1..1..0..1....1..0..1..2..2....2..0..0..0..2 CROSSREFS Column 1 and row 1 are A235584 Sequence in context: A253468 A253462 A206512 * A235588 A206505 A235584 Adjacent sequences:  A235830 A235831 A235832 * A235834 A235835 A235836 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 16 2014 STATUS approved

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Last modified October 26 11:29 EDT 2020. Contains 338027 sequences. (Running on oeis4.)