Number of n X 4 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
A284218
Number of n X 4 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
Terms
- a(0) =6a(1) =44a(2) =499a(3) =6511a(4) =91260a(5) =1317770a(6) =19371893a(7) =288303232a(8) =4330336770a(9) =65507133232a(10) =996599090507
External references
- oeis: A284218