Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,0,1 for x=0,1,2,3,4.
A197093
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,0,1 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =18a(2) =74a(3) =384a(4) =1880a(5) =9274a(6) =45843a(7) =226260a(8) =1117379a(9) =5517062a(10) =27241839a(11) =134512788a(12) =664185673a(13) =3279563167a(14) =16193558462a(15) =79959241428a(16) =394816250117
External references
- oeis: A197093