Equals two maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 n X 3 array.
A220324
Equals two maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 n X 3 array.
Terms
- a(0) =2a(1) =16a(2) =92a(3) =508a(4) =2788a(5) =15316a(6) =84196a(7) =462940a(8) =2545492a(9) =13996468a(10) =76959844a(11) =423164812a(12) =2326777444a(13) =12793817140a(14) =70346976484a(15) =386803802332
External references
- oeis: A220324