Number of permutations of 1..n containing the relative rank sequence { 251364 } at any spacing.
A159160
Number of permutations of 1..n containing the relative rank sequence { 251364 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =896a(3) =18301a(4) =345317a(5) =6284262a(6) =112921242a(7) =2031741524a(8) =36935708956
External references
- oeis: A159160