Number T(n,k) of partitions of an n-set with distinct block sizes and maximal block size equal to k; triangle T(n,k), k>=0, k<=n<=k*(k+1)/2, read by columns.

A262078

Number T(n,k) of partitions of an n-set with distinct block sizes and maximal block size equal to k; triangle T(n,k), k>=0, k<=n<=k*(k+1)/2, read by columns.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =4a(6) =10a(7) =60a(8) =1a(9) =5a(10) =15a(11) =140a(12) =280a(13) =1260a(14) =12600a(15) =1a(16) =6a(17) =21a(18) =224a(19) =630a(20) =3780a(21) =34650a(22) =110880a(23) =360360a(24) =2522520a(25) =37837800a(26) =1a(27) =7a(28) =28a(29) =336

External references