Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
A197340
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =37a(2) =297a(3) =2864a(4) =25336a(5) =238206a(6) =2218128a(7) =20616615a(8) =191742443a(9) =1785824065a(10) =16629090574a(11) =154844024184
External references
- oeis: A197340