Number of permutations of 1..n containing the relative rank sequence { 213564 } at any spacing.
A159140
Number of permutations of 1..n containing the relative rank sequence { 213564 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =892a(3) =18096a(4) =338937a(5) =6126649a(6) =109501246a(7) =1963185574a(8) =35629128055a(9) =658556882075
External references
- oeis: A159140