Number of permutations of 1..n containing the relative rank sequence { 326154 } at any spacing.
A159171
Number of permutations of 1..n containing the relative rank sequence { 326154 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =893a(3) =18156a(4) =341052a(5) =6184421a(6) =110862103a(7) =1992379201a(8) =36217913135a(9) =669946863429
External references
- oeis: A159171