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 A205246 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors 9
 81, 486, 486, 2990, 4158, 2990, 18148, 36478, 36478, 18148, 111041, 323806, 515162, 323806, 111041, 677732, 2873148, 7051340, 7051340, 2873148, 677732, 4143102, 25443411, 97718448, 144087952, 97718448, 25443411, 4143102, 25302238 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......81........486.........2990..........18148...........111041 ......486.......4158........36478.........323806..........2873148 .....2990......36478.......515162........7051340.........97718448 ....18148.....323806......7051340......144087952.......2954664074 ...111041....2873148.....97718448.....2954664074......96890744524 ...677732...25443411...1334713506....60907844595....3053080325738 ..4143102..225349124..18384097800..1253758820754...98979850888752 .25302238.1996606633.251875514320.25826772963664.3147626098090446 LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 EXAMPLE Some solutions for n=4 k=3 ..1..2..1..0....0..0..1..0....0..1..2..2....1..2..1..2....2..1..1..0 ..1..2..2..1....1..1..2..2....0..0..1..1....1..2..2..0....1..0..1..0 ..1..0..0..1....2..1..2..0....2..1..2..2....1..1..1..1....0..1..2..0 ..2..2..0..2....1..0..0..1....1..0..2..0....0..0..1..2....0..0..2..0 ..1..2..0..0....1..1..1..2....0..1..2..2....2..0..1..0....2..1..2..2 CROSSREFS Sequence in context: A250613 A237077 A236646 * A205239 A236427 A235842 Adjacent sequences: A205243 A205244 A205245 * A205247 A205248 A205249 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 24 2012 STATUS approved

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Last modified November 29 10:13 EST 2023. Contains 367429 sequences. (Running on oeis4.)