Number of permutations of 1..n containing the relative rank sequence { 23145 } at any spacing.
A158423
Number of permutations of 1..n containing the relative rank sequence { 23145 } at any spacing.
Terms
- a(0) =1a(1) =26a(2) =459a(3) =7034a(4) =101953a(5) =1454402a(6) =20863742a(7) =304906732a(8) =4578822750a(9) =71092815624
External references
- oeis: A158423