Number of non-weakly alternating patterns of length n.
A350138
Number of non-weakly alternating patterns of length n.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =2a(4) =32a(5) =338a(6) =3560a(7) =40058a(8) =492664a(9) =6647666a(10) =98210192a(11) =1581844994a(12) =27642067000a(13) =521491848218
External references
- oeis: A350138