Number T(n,k) of set partitions of [n] such that at least one of the block sizes is k or k=0; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A327884
Number T(n,k) of set partitions of [n] such that at least one of the block sizes is k or k=0; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =1a(6) =5a(7) =4a(8) =3a(9) =1a(10) =15a(11) =11a(12) =9a(13) =4a(14) =1a(15) =52a(16) =41a(17) =35a(18) =20a(19) =5a(20) =1a(21) =203a(22) =162a(23) =150a(24) =90a(25) =30a(26) =6a(27) =1a(28) =877a(29) =715
External references
- oeis: A327884