Number of permutations of 1..n containing the relative rank sequence { 164235 } at any spacing.
A159135
Number of permutations of 1..n containing the relative rank sequence { 164235 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =894a(3) =18204a(4) =342463a(5) =6217688a(6) =111559332a(7) =2006051247a(8) =36475965820
External references
- oeis: A159135