Number of elementary sequences of length n, where permutations of the components are taken into account.
A234595
Number of elementary sequences of length n, where permutations of the components are taken into account.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =23a(4) =256a(5) =4647a(6) =128262a(7) =5128503a(8) =285150124a(9) =21299101823
External references
- oeis: A234595