Number of set partitions of [n] with distinct block sizes and one of the block sizes is 3.
A328155
Number of set partitions of [n] with distinct block sizes and one of the block sizes is 3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =10a(6) =60a(7) =35a(8) =336a(9) =1848a(10) =16080a(11) =33825a(12) =93280a(13) =539396a(14) =3856216a(15) =49390250a(16) =147478800a(17) =708041160a(18) =2354289744a(19) =18196716309a(20) =150847235040
External references
- oeis: A328155