Number of set partitions of [n] into exactly nine blocks where sizes of distinct blocks are coprime.
A280887
Number of set partitions of [n] into exactly nine blocks where sizes of distinct blocks are coprime.
Terms
- a(0) =1a(1) =45a(2) =165a(3) =8415a(4) =1287a(5) =195195a(6) =366795a(7) =22046310a(8) =2358070a(9) =693870606a(10) =39982878a(11) =7765924530a(12) =19829897010a(14) =4013220090a(16) =769009559175
External references
- oeis: A280887