Number of sequences in {1,...,n}^n with longest increasing subsequence of length two.
A268869
Number of sequences in {1,...,n}^n with longest increasing subsequence of length two.
Terms
- a(0) =1a(1) =16a(2) =175a(3) =1771a(4) =17906a(5) =184920a(6) =1958979a(7) =21253375a(8) =235401166a(9) =2653427140a(10) =30356604642a(11) =351714783980
External references
- oeis: A268869