Composite numbers k such that the difference between the odd and even aliquot parts of k divides k.

Terms

a(0) =4a(1) =6a(2) =20a(3) =30a(4) =60a(5) =270a(6) =630a(7) =728a(8) =1170a(9) =1638a(10) =1890a(11) =2310a(12) =2730a(13) =2970a(14) =4590a(15) =8190a(16) =8910a(17) =12870a(18) =14850a(19) =16830a(20) =17850a(21) =18018a(22) =18810a(23) =19110a(24) =19890a(25) =22230a(26) =27846a(27) =27930a(28) =33930a(29) =52290