Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..3 nX3 array.
A220748
Equals one maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..3 nX3 array.
Terms
- a(0) =4a(1) =38a(2) =395a(3) =3778a(4) =32178a(5) =261356a(6) =2096110a(7) =16776148a(8) =134216342a(9) =1073740504a(10) =8589932829a(11) =68719475152a(12) =549755811711
External references
- oeis: A220748