Triangle A061356 read right to left.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =6a(5) =9a(6) =1a(7) =12a(8) =48a(9) =64a(10) =1a(11) =20a(12) =150a(13) =500a(14) =625a(15) =1a(16) =30a(17) =360a(18) =2160a(19) =6480a(20) =7776a(21) =1a(22) =42a(23) =735a(24) =6860a(25) =36015a(26) =100842a(27) =117649a(28) =1a(29) =56