Number of permutations of 6 indistinguishable copies of 1..n with exactly 5 adjacent element pairs in decreasing order.
A151654
Number of permutations of 6 indistinguishable copies of 1..n with exactly 5 adjacent element pairs in decreasing order.
Terms
- a(0) =0a(1) =36a(2) =4050864a(3) =10490842656
External references
- oeis: A151654