Number of permutations of 1..n arranged in a circle with exactly 6 adjacent element pairs in decreasing order.
A151579
Number of permutations of 1..n arranged in a circle with exactly 6 adjacent element pairs in decreasing order.
Terms
- a(0) =0a(1) =7a(2) =960a(3) =38637a(4) =882340a(5) =14413894a(6) =188690976a(7) =2112659718a(8) =21078701112a(9) =192648942945
External references
- oeis: A151579