Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 4 maxima.
A181228
Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 4 maxima.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =476a(8) =20956a(9) =541960a(10) =10783530a(11) =183084580a(12) =2796467584a(13) =39641212284a(14) =532014841490
External references
- oeis: A181228