Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.
A197525
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =7a(2) =69a(3) =289a(4) =2131a(5) =12071a(6) =74637a(7) =454685a(8) =2748523a(9) =16739531a(10) =101635341a(11) =617647081a(12) =3752641091a(13) =22798729927a(14) =138527481045a(15) =841658638245
External references
- oeis: A197525