Number of set partitions of {1..n} such that the mean of the means of the blocks is (n+1)/2.
A361910
Number of set partitions of {1..n} such that the mean of the means of the blocks is (n+1)/2.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =7a(4) =12a(5) =47a(6) =99a(7) =430a(8) =1379a(9) =5613a(10) =21416a(11) =127303a(12) =532201a(13) =3133846a(14) =18776715a(15) =114275757a(16) =737859014
External references
- oeis: A361910