Filter-sequence for Stern polynomials: Least number with the same prime signature as A260443(n).

Terms

a(0) =1a(1) =2a(2) =2a(3) =6a(4) =2a(5) =12a(6) =6a(7) =30a(8) =2a(9) =60a(10) =12a(11) =120a(12) =6a(13) =180a(14) =30a(15) =210a(16) =2a(17) =420a(18) =60a(19) =1080a(20) =12a(21) =2160a(22) =120a(23) =2520a(24) =6a(25) =2520a(26) =180a(27) =7560a(28) =30a(29) =6300