Number of permutations of [n] whose lengths of increasing runs are factorials.
A317132
Number of permutations of [n] whose lengths of increasing runs are factorials.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =70a(6) =350a(7) =2029a(8) =13495a(9) =100813a(10) =837647a(11) =7652306a(12) =76282541a(13) =823684964a(14) =9578815164a(15) =119346454671
External references
- oeis: A317132