Number of permutations of length n avoiding 12345 and containing exactly 1 occurrence of 12354.
A224296
Number of permutations of length n avoiding 12345 and containing exactly 1 occurrence of 12354.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =18a(6) =219a(7) =2294a(8) =22457a(9) =212994a(10) =1992364a(11) =18553588a(12) =172889838a(13) =1616683912a(14) =15193902185a(15) =143632773054
External references
- oeis: A224296