Number of set partitions of [n] into exactly five blocks where sizes of distinct blocks are coprime.

A280883

Number of set partitions of [n] into exactly five blocks where sizes of distinct blocks are coprime.

Terms

    a(0) =1a(1) =15a(2) =35a(3) =630a(4) =126a(5) =6930a(6) =9570a(7) =202455a(8) =35035a(9) =3612609a(10) =361725a(11) =25350780a(12) =50620220a(13) =1262865060a(14) =15864468a(15) =33652405845a(16) =942571665a(17) =68217941715a(18) =72924794635a(20) =364040548850

External references