Number of set partitions of {1..n} with block-means summing to an integer.

A361866

Number of set partitions of {1..n} with block-means summing to an integer.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =8a(5) =22a(6) =75a(7) =267a(8) =1119a(9) =4965a(10) =22694a(11) =117090a(12) =670621a(13) =3866503a(14) =24113829a(15) =161085223a(16) =1120025702a(17) =8121648620a(18) =62083083115a(19) =492273775141

External references