Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 n X 3 array.
A221059
Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 n X 3 array.
Terms
- a(0) =4a(1) =37a(2) =323a(3) =2735a(4) =22683a(5) =185563a(6) =1503659a(7) =12103019a(8) =96951211a(9) =773938571a(10) =6162595115a(11) =48980025803a(12) =388763683179
External references
- oeis: A221059