a(n) is the least positive number with distinct decimal digits and n prime factors, counted with multiplicity, or -1 if there is no such number.

A364040

a(n) is the least positive number with distinct decimal digits and n prime factors, counted with multiplicity, or -1 if there is no such number.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =64a(7) =128a(8) =256a(9) =512a(10) =1024a(11) =2048a(12) =4096a(13) =8192a(14) =16384a(15) =32768a(16) =98304a(17) =327680a(18) =917504a(19) =786432a(20) =1048576a(21) =3145728a(22) =15728640a(23) =31457280a(24) =2845310976a(25) =6398410752a(26) =-1a(27) =-1a(28) =-1a(29) =536870912

External references