Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors.
A208561
Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors.
Terms
- a(0) =2a(1) =10a(2) =68a(3) =464a(4) =3168a(5) =21632a(6) =147712a(7) =1008640a(8) =6887424a(9) =47030272a(10) =321142784a(11) =2192900096a(12) =14974058496a(13) =102249267200a(14) =698201669632
External references
- oeis: A208561