Number of permutations of 1..n containing the relative rank sequence { 45231 } at any spacing.
A158431
Number of permutations of 1..n containing the relative rank sequence { 45231 } at any spacing.
Terms
- a(0) =1a(1) =26a(2) =458a(3) =6995a(4) =101027a(5) =1436898a(6) =20572392a(7) =300418660a(8) =4513021536a(9) =70158846231
External references
- oeis: A158431