Number of set partitions of {1..n} with equal block sizes and equal block sums.
A327899
Number of set partitions of {1..n} with equal block sizes and equal block sums.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =2a(7) =1a(8) =6a(9) =3a(10) =2a(11) =1a(12) =63a(13) =1a(14) =2a(15) =317a(16) =657a(17) =1a(18) =4333a(19) =1a(20) =9609
External references
- oeis: A327899