Number of length 2n sequences p(i=0..2n-1) with 0<=p(i)<=i and having exactly n maxima.
A181225
Number of length 2n sequences p(i=0..2n-1) with 0<=p(i)<=i and having exactly n maxima.
Terms
- a(0) =2a(1) =3a(2) =26a(3) =476a(4) =14905a(5) =708825a(6) =47514180a(7) =4264132468a(8) =493337571005
External references
- oeis: A181225