Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,3,0,1 for x=0,1,2,3,4.
A196805
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,3,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =7a(2) =37a(3) =193a(4) =1515a(5) =8719a(6) =52291a(7) =334317a(8) =2067173a(9) =12663609a(10) =78727511a(11) =488078559a(12) =3014804713a(13) =18665197193a(14) =115593457951a(15) =715253390987
External references
- oeis: A196805