Number of set partitions of [n] with minimal block length multiplicity equal to three.
A271763
Number of set partitions of [n] with minimal block length multiplicity equal to three.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =15a(4) =0a(5) =0a(6) =1540a(7) =3150a(8) =24255a(9) =81235a(10) =496210a(11) =605605a(12) =36987951a(13) =13833820a(14) =849333940a(15) =24419945732a(16) =111237098546
External references
- oeis: A271763