Total number of occurrences of 5 in the (signed) displacement sets of all permutations of [n+5] divided by 5!.
A324355
Total number of occurrences of 5 in the (signed) displacement sets of all permutations of [n+5] divided by 5!.
Terms
- a(0) =0a(1) =1a(2) =11a(3) =109a(4) =1115a(5) =12151a(6) =142205a(7) =1788361a(8) =24118967a(9) =347811859a(10) =5345895929a(11) =87298986325
External references
- oeis: A324355