Number of permutations in S_n that avoid the pattern 42315.
A256206
Number of permutations in S_n that avoid the pattern 42315.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =119a(6) =694a(7) =4581a(8) =33287a(9) =260967a(10) =2175379a(11) =19072271a(12) =174426353a(13) =1653484169a(14) =16165513608a(15) =162344264849
External references
- oeis: A256206