Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,0,1 for x=0,1,2,3,4.
A197668
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =5a(1) =71a(2) =546a(3) =5005a(4) =44323a(5) =403960a(6) =3675345a(7) =33272751a(8) =301565202a(9) =2734015025a(10) =24796812073a(11) =224875172500
External references
- oeis: A197668