Number of partitions of [n] having exactly one block of maximal size and one block of minimal size (and any number of non-extremal blocks).

A372802

Number of partitions of [n] having exactly one block of maximal size and one block of minimal size (and any number of non-extremal blocks).

Terms

    a(0) =0a(1) =1a(2) =1a(3) =4a(4) =5a(5) =16a(6) =82a(7) =169a(8) =1381a(9) =4162a(10) =34346a(11) =109099a(12) =1114610a(13) =5041271a(14) =39441963a(15) =269812729a(16) =1972727781a(17) =14983080612a(18) =126099739072a(19) =989666749503

External references