Sum of the lengths of the longest increasing subsequence over all 321-avoiding permutations of [n].
A132889
Sum of the lengths of the longest increasing subsequence over all 321-avoiding permutations of [n].
Terms
- a(0) =1a(1) =3a(2) =11a(3) =39a(4) =144a(5) =530a(6) =1987a(7) =7455a(8) =28268a(9) =107334a(10) =410354a(11) =1570954a(12) =6042984a(13) =23273172a(14) =89948835a(15) =348000975a(16) =1350028020a(17) =5241881150a(18) =20396787070a(19) =79426533758a(20) =309829067496
External references
- oeis: A132889