Number of set partitions of [n] into exactly seven blocks where sizes of distinct blocks are coprime.
A280885
Number of set partitions of [n] into exactly seven blocks where sizes of distinct blocks are coprime.
Terms
- a(0) =1a(1) =28a(2) =84a(3) =2730a(4) =462a(5) =45276a(6) =73788a(7) =2849847a(8) =365365a(9) =69293224a(10) =4913272a(11) =623100660a(12) =1424294340a(13) =67844069880a(14) =333126696a(16) =38838853515
External references
- oeis: A280885