Triangle with columns built from certain power sequences.

Terms

a(0) =1a(1) =4a(2) =1a(3) =16a(4) =5a(5) =1a(6) =64a(7) =40a(8) =6a(9) =1a(10) =256a(11) =320a(12) =72a(13) =7a(14) =1a(15) =1024a(16) =2560a(17) =864a(18) =112a(19) =8a(20) =1a(21) =4096a(22) =20480a(23) =10368a(24) =1792a(25) =160a(26) =9a(27) =1a(28) =16384a(29) =163840