Number of 2 X n 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A280674
Number of 2 X n 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =2a(1) =11a(2) =59a(3) =338a(4) =1917a(5) =10893a(6) =61880a(7) =351541a(8) =1997095a(9) =11345458a(10) =64453321a(11) =366158041a(12) =2080136592a(13) =11817214849a(14) =67133363931a(15) =381383313234
External references
- oeis: A280674