Number of 2 X n 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 right-upward antidiagonal neighbors.
A209101
Number of 2 X n 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 right-upward antidiagonal neighbors.
Terms
- a(0) =2a(1) =11a(2) =76a(3) =520a(4) =3552a(5) =24256a(6) =165632a(7) =1131008a(8) =7723008a(9) =52736000a(10) =360103936a(11) =2458943488a(12) =16790716416a(13) =114654183424a(14) =782907736064
External references
- oeis: A209101