Number of 1324-avoiding permutations of length n with a non-intersecting boundary of type (t, 3), for some integer t >= 1.
A278027
Number of 1324-avoiding permutations of length n with a non-intersecting boundary of type (t, 3), for some integer t >= 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =7a(6) =33a(7) =139a(8) =566a(9) =2279a(10) =9132a(11) =36488a(12) =145500a(13) =579318
External references
- oeis: A278027