A196745 - OEIS

%I #7 Oct 30 2022 15:42:26

%S 1,99,4559,134507,4717086,158910093,5423213789,184583551173,

%T 6281590396734,213663802431954,7273588793555438,247506982572487479,

%U 8422846977433705331,286636127515942129449,9754487417323791315992

%N Number of n X 7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,0,4 for x=0,1,2,3,4.

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

%C Column 7 of A196746.

%H R. H. Hardin, <a href="/A196745/b196745.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

%e ..0..0..0..0..1..0..0....0..0..0..0..0..0..0....0..0..3..0..3..0..0

%e ..0..0..3..0..3..0..0....0..3..0..0..3..1..0....0..0..0..0..0..1..0

%e ..3..0..3..0..0..0..0....0..1..1..3..0..0..3....0..0..3..3..0..3..0

%e ..0..0..0..0..3..0..0....0..0..0..0..0..0..0....0..3..0..0..3..0..0

%Y Cf. A196746.

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 06 2011