Number of permutations of 1..n containing the relative rank sequence { 136254 } at any spacing.
A159104
Number of permutations of 1..n containing the relative rank sequence { 136254 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =894a(3) =18199a(4) =342140a(5) =6205428a(6) =111199318a(7) =1996955286a(8) =36267229831a(9) =670222865921
External references
- oeis: A159104