Triangle read by rows: row n contains the numbers C(n,k)^(k-1) for 0 <= k <= n, n >= 0.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =3a(9) =1a(10) =1a(11) =1a(12) =6a(13) =16a(14) =1a(15) =1a(16) =1a(17) =10a(18) =100a(19) =125a(20) =1a(21) =1a(22) =1a(23) =15a(24) =400a(25) =3375a(26) =1296a(27) =1a(28) =1a(29) =1