Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.
A197473
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.
Terms
- a(0) =4a(1) =50a(2) =374a(3) =2824a(4) =22672a(5) =165200a(6) =1265828a(7) =9507212a(8) =72145488a(9) =544829612a(10) =4121917612a(11) =31166838320a(12) =235726500646
External references
- oeis: A197473