Number of compositions (ordered partitions) of n into n parts, allowing zeros, with distinct nonzero parts.

A097965

Number of compositions (ordered partitions) of n into n parts, allowing zeros, with distinct nonzero parts.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =16a(4) =45a(5) =186a(6) =343a(7) =848a(8) =1809a(9) =8290a(10) =13431a(11) =33672a(12) =66157a(13) =143066a(14) =591165a(15) =966016a(16) =2180913a(17) =4281570a(18) =8776423a(19) =15865400a(20) =67586841a(21) =101053282a(22) =226690047a(23) =420479952a(24) =845781625a(25) =1476079826a(26) =2830894353a(27) =10479645568a(28) =15758982597a(29) =33145324410

External references