Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 3Xn array.
A220330
Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 3Xn array.
Terms
- a(0) =1a(1) =12a(2) =92a(3) =572a(4) =4062a(5) =29467a(6) =213225a(7) =1540686a(8) =11163495a(9) =80656708a(10) =581473349a(11) =4190483128a(12) =30199355040a(13) =217538559602
External references
- oeis: A220330