Number of permutations of length n containing the minimum number of monotone subsequences of length 4.
A079104
Number of permutations of length n containing the minimum number of monotone subsequences of length 4.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =86a(5) =306a(6) =882a(7) =1764a(8) =1764a(9) =8738a(10) =6892a(11) =1682a(12) =14706a(13) =4182a(14) =1250a(15) =6250a(16) =3750a(17) =1250
External references
- oeis: A079104