Number of permutations of 1..n containing the relative rank sequence { 251463 } at any spacing.
A159161
Number of permutations of 1..n containing the relative rank sequence { 251463 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =896a(3) =18305a(4) =345573a(5) =6293848a(6) =113198337a(7) =2038624247a(8) =37090848761
External references
- oeis: A159161