Number of set partitions of {1..n} such that the mean of the means of the blocks is an integer.
A361865
Number of set partitions of {1..n} such that the mean of the means of the blocks is an integer.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =2a(4) =12a(5) =18a(6) =101a(7) =232a(8) =1547a(9) =3768a(10) =24974a(11) =116728a(12) =687419a(13) =3489664a(14) =26436217a(15) =159031250a(16) =1129056772
External references
- oeis: A361865