Total number of occurrences of n in the (signed) displacement sets of all permutations of [2n] divided by n!.
A324361
Total number of occurrences of n in the (signed) displacement sets of all permutations of [2n] divided by n!.
Terms
- a(0) =0a(1) =1a(2) =5a(3) =49a(4) =679a(5) =12151a(6) =266321a(7) =6906257a(8) =206788751a(9) =7020426511a(10) =266464077769
External references
- oeis: A324361