Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,1,1 for x=0,1,2,3,4.
A197777
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =14a(2) =67a(3) =338a(4) =1646a(5) =8085a(6) =39748a(7) =194964a(8) =957860a(9) =4707712a(10) =23133353a(11) =113660751a(12) =558419575a(13) =2743624616a(14) =13480339775a(15) =66233515886a(16) =325425835373
External references
- oeis: A197777