Number of entries in the fourth blocks of all set partitions of [n] when blocks are ordered by increasing lengths.
A332944
Number of entries in the fourth blocks of all set partitions of [n] when blocks are ordered by increasing lengths.
Terms
- a(0) =1a(1) =21a(2) =166a(3) =1247a(4) =7855a(5) =47245a(6) =284968a(7) =1741235a(8) =10782872a(9) =69537976a(10) =471717130a(11) =3336898255a(12) =24584784957a(13) =189704257763
External references
- oeis: A332944