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A196300 T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,1,4,2 for x=0,1,2,3,4 8

%I

%S 1,3,3,4,9,4,5,20,20,5,9,61,58,61,9,16,187,290,290,187,16,25,536,1201,

%T 2161,1201,536,25,39,1597,4988,14231,14231,4988,1597,39,64,4849,21344,

%U 97892,160800,97892,21344,4849,64,105,14582,90150,686759,1752855,1752855

%N T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,1,4,2 for x=0,1,2,3,4

%C Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 4's, every 4 is next to 4 2's

%C Table starts

%C ...1.....3.......4.........5...........9............16..............25

%C ...3.....9......20........61.........187...........536............1597

%C ...4....20......58.......290........1201..........4988...........21344

%C ...5....61.....290......2161.......14231.........97892..........686759

%C ...9...187....1201.....14231......160800.......1752855........19123802

%C ..16...536....4988.....97892.....1752855......29726608.......513362648

%C ..25..1597...21344....686759....19123802.....513362648.....14372583192

%C ..39..4849...90150...4731033...207927811....9011375854....402254701097

%C ..64.14582..381754..32374680..2289816421..157499416616..11172616795189

%C .105.44097.1621695.222897413.25196042496.2741611675889.309961960884860

%H R. H. Hardin, <a href="/A196300/b196300.txt">Table of n, a(n) for n = 1..144</a>

%e Some solutions for n=6 k=4

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

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

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

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

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

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

%Y Column 1 is A195971

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Sep 30 2011

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Last modified August 9 12:14 EDT 2020. Contains 336323 sequences. (Running on oeis4.)