Number of 5 X n 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
A208640
Number of 5 X n 0..1 arrays with new values 0..1 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) =16a(1) =89a(2) =284a(3) =722a(4) =1652a(5) =3577a(6) =7504a(7) =15448a(8) =31440a(9) =63543a(10) =127884a(11) =256718a(12) =514556a(13) =1030421a(14) =2062360a(15) =4126468a(16) =8254936a(17) =16512147a(18) =33026868a(19) =66056634a(20) =132116516a(21) =264236657a(22) =528477344a(23) =1056959152a(24) =2113923232a(25) =4227851887a(26) =8455709724
External references
- oeis: A208640