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 A237511 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 9
 81, 328, 328, 1342, 1724, 1342, 5622, 9108, 9108, 5622, 23545, 50876, 62031, 50876, 23545, 97700, 284368, 462206, 462206, 284368, 97700, 406008, 1553960, 3489965, 4882448, 3489965, 1553960, 406008, 1690160, 8478776, 25188644, 52177092 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......81........328........1342..........5622...........23545 ......328.......1724........9108.........50876..........284368 .....1342.......9108.......62031........462206.........3489965 .....5622......50876......462206.......4882448........52177092 ....23545.....284368.....3489965......52177092.......785179913 ....97700....1553960....25188644.....519582770.....10729163264 ...406008....8478776...180995914....5108133318....144998701422 ..1690160...46757986..1323886040...52155298022...2060542176864 ..7044600..257959884..9750862216..537071054554..29631609284098 .29290848.1416477192.70896853212.5420999342862.413277799902244 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 FORMULA Empirical for column k: k=1: a(n) = 208*a(n-4) +1448*a(n-6) +2500*a(n-8) +528*a(n-10) -624*a(n-12) k=2: [order 29] EXAMPLE Some solutions for n=3 k=4 ..0..1..2..0..1....0..1..1..0..0....0..2..2..1..2....0..2..1..2..2 ..1..1..0..0..2....1..1..1..1..0....1..0..1..2..0....1..0..2..2..2 ..1..1..1..2..0....1..1..2..0..1....1..0..2..0..1....1..1..0..1..1 ..0..1..1..1..0....1..0..1..2..1....1..2..1..1..1....0..2..2..1..0 CROSSREFS Sequence in context: A250427 A236828 A236821 * A237504 A222162 A237481 Adjacent sequences: A237508 A237509 A237510 * A237512 A237513 A237514 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 08 2014 STATUS approved

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Last modified March 30 17:07 EDT 2023. Contains 361622 sequences. (Running on oeis4.)