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..1 n X 3 array.
A220574
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..1 n X 3 array.
Terms
- a(0) =4a(1) =21a(2) =91a(3) =375a(4) =1487a(5) =5835a(6) =22775a(7) =88683a(8) =344975a(9) =1341395a(10) =5214791a(11) =20271307a(12) =78797247a(13) =306290211a(14) =1190562423a(15) =4627750267a(16) =17988173039a(17) =69920406547a(18) =271782019879
External references
- oeis: A220574