Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 nX4 array.

A222383

Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 nX4 array.

Terms

    a(0) =16a(1) =248a(2) =3968a(3) =63488a(4) =1048320a(5) =16777216a(6) =268435072a(7) =4294961152a(8) =68702699520

External references