Number of permutations of 1..n containing the relative rank sequence { 52431 } at any spacing.
A158437
Number of permutations of 1..n containing the relative rank sequence { 52431 } at any spacing.
Terms
- a(0) =1a(1) =26a(2) =460a(3) =7064a(4) =102510a(5) =1462680a(6) =20971656a(7) =306191550a(8) =4593023012a(9) =71238398197
External references
- oeis: A158437