Numbers which divide the concatenation, in ascending order, of their anti-divisors.

Terms

a(0) =15a(1) =30a(2) =105a(3) =120a(4) =150a(5) =222a(6) =375a(7) =585a(8) =1500a(9) =1695a(10) =1755a(11) =1800a(12) =2700a(13) =3449a(14) =3750a(15) =3840a(16) =4891a(17) =6720a(18) =7680a(19) =12000a(20) =13583a(21) =14400a(22) =15000a(23) =18750a(24) =19200a(25) =20940a(26) =28134a(27) =30000a(28) =34800a(29) =35625