Number of permutations of [n] where the length of the longest increasing subsequence is larger than or equal to the length of the longest decreasing subsequence.
A321315
Number of permutations of [n] where the length of the longest increasing subsequence is larger than or equal to the length of the longest decreasing subsequence.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =14a(4) =78a(5) =488a(6) =3161a(7) =25092a(8) =231428a(9) =2299664a(10) =24809824a(11) =296046900a(12) =3863542365a(13) =54081895706a(14) =806425921874
External references
- oeis: A321315