Number of n X 3 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors.
A208264
Number of n X 3 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors.
Terms
- a(0) =4a(1) =25a(2) =161a(3) =1033a(4) =6631a(5) =42563a(6) =273205a(7) =1753657a(8) =11256431a(9) =72253147a(10) =463780861a(11) =2976931745a(12) =19108426759a(13) =122653794067a(14) =787294181189
External references
- oeis: A208264