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 A237308 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median of every 2X2 subblock equal 9

%I

%S 81,435,435,2174,5433,2174,11545,60958,60958,11545,61055,731603,

%T 1415117,731603,61055,326262,8680769,36167196,36167196,8680769,326262,

%U 1745153,103860036,901210126,2009833839,901210126,103860036,1745153,9357963

%N T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median of every 2X2 subblock equal

%C Table starts

%C ......81.........435...........2174.............11545................61055

%C .....435........5433..........60958............731603..............8680769

%C ....2174.......60958........1415117..........36167196............901210126

%C ...11545......731603.......36167196........2009833839.........108105728913

%C ...61055.....8680769......901210126......108105728913.......12453653921528

%C ..326262...103860036....22791851729.....5924015749908.....1470245290038872

%C .1745153..1241171131...575227568134...323852801203185...173172498170107173

%C .9357963.14853266129.14576482693268.17797884221279895.20549153283999881019

%H R. H. Hardin, <a href="/A237308/b237308.txt">Table of n, a(n) for n = 1..199</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 9]

%F k=2: [order 17]

%F k=3: [order 38]

%F k=4: [order 87]

%e Some solutions for n=2 k=4

%e ..0..1..0..0..1....0..1..0..0..2....0..0..0..1..1....0..0..2..0..1

%e ..0..1..1..1..2....1..2..1..1..1....2..1..1..1..1....1..1..1..1..1

%e ..1..0..2..0..0....1..0..0..2..1....0..1..2..1..2....0..1..1..1..0

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Feb 06 2014

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Last modified May 20 10:18 EDT 2022. Contains 353871 sequences. (Running on oeis4.)