Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
A284161
Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically 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) =42a(2) =461a(3) =5888a(4) =80072a(5) =1142173a(6) =16699997a(7) =247899694a(8) =3717494360a(9) =56178550056a(10) =854108948176
External references
- oeis: A284161