Odd bisection of A278243: a(n) = A046523(A277324(n)).

Terms

a(0) =2a(1) =6a(2) =12a(3) =30a(4) =60a(5) =120a(6) =180a(7) =210a(8) =420a(9) =1080a(10) =2160a(11) =2520a(12) =2520a(13) =7560a(14) =6300a(15) =2310a(16) =4620a(17) =37800a(18) =90720a(19) =75600a(20) =226800a(21) =544320a(22) =453600a(23) =138600a(24) =138600a(25) =756000a(26) =2268000a(27) =831600a(28) =415800a(29) =2079000