Number of set partitions of [n] with minimal block length multiplicity equal to four.

A271764

Number of set partitions of [n] with minimal block length multiplicity equal to four.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =105a(5) =0a(6) =0a(7) =0a(8) =67375a(9) =135135a(10) =1261260a(11) =675675a(12) =50925875a(13) =97847750a(14) =703993290a(15) =6215737710a(16) =228687298476a(17) =58017429575

External references