Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} in which the last block is the singleton {k}, 1<=k<=n; the blocks are ordered with increasing least elements.
A108458
Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} in which the last block is the singleton {k}, 1<=k<=n; the blocks are ordered with increasing least elements.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =1a(8) =3a(9) =5a(10) =0a(11) =1a(12) =5a(13) =10a(14) =15a(15) =0a(16) =1a(17) =9a(18) =22a(19) =37a(20) =52a(21) =0a(22) =1a(23) =17a(24) =52a(25) =99a(26) =151a(27) =203a(28) =0a(29) =1
External references
- oeis: A108458