a(n) is the number of length n decorated permutations avoiding the pattern 012.
A334154
a(n) is the number of length n decorated permutations avoiding the pattern 012.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =15a(4) =54a(5) =236a(6) =1254a(7) =7986a(8) =59584a(9) =509304a(10) =4897272a(11) =52237448a(12) =611460432a(13) =7787383488a(14) =107155194928
External references
- oeis: A334154