Triangle in which j-th entry in i-th row is (i+1-j)^j, 0<=j<=i.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =4a(9) =1a(10) =1a(11) =4a(12) =9a(13) =8a(14) =1a(15) =1a(16) =5a(17) =16a(18) =27a(19) =16a(20) =1a(21) =1a(22) =6a(23) =25a(24) =64a(25) =81a(26) =32a(27) =1a(28) =1a(29) =7