Bases and exponents in the prime decomposition of n replaced by composites with these indices.

Terms

a(0) =4a(1) =6a(2) =8a(3) =46656a(4) =10a(5) =48a(6) =14a(7) =1679616a(8) =262144a(9) =60a(10) =20a(11) =373248a(12) =22a(13) =84a(14) =80a(15) =10077696a(16) =27a(17) =1572864a(18) =30a(19) =466560a(20) =112a(21) =120a(22) =35a(23) =13436928a(24) =1000000a(25) =132a(26) =16777216a(27) =653184a(28) =44a(29) =480