Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 2 maxima.
A181226
Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 2 maxima.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =3a(4) =41a(5) =383a(6) =3073a(7) =22835a(8) =162517a(9) =1127399a(10) =7700835a(11) =52118506a(12) =350902046a(13) =2356532130a(14) =15813455692a(15) =106160717591a(16) =713555194577
External references
- oeis: A181226