Number of permutations of 1..n arranged in a circle with exactly 5 adjacent element pairs in decreasing order.
A151578
Number of permutations of 1..n arranged in a circle with exactly 5 adjacent element pairs in decreasing order.
Terms
- a(0) =0a(1) =6a(2) =399a(3) =9528a(4) =140571a(5) =1561900a(6) =14413894a(7) =116857368a(8) =862140162a(9) =5925941490a(10) =38576132625a(11) =240659672336
External references
- oeis: A151578