Numbers m such that m | A000385(m-1) = Sum_{k=1..m-1} sigma(k) * sigma(m-k).

Terms

a(0) =1a(1) =3a(2) =40a(3) =84a(4) =124a(5) =318a(6) =496a(7) =672a(8) =732a(9) =790a(10) =1320a(11) =1488a(12) =3154a(13) =4464a(14) =5271a(15) =8128a(16) =9156a(17) =9888a(18) =10880a(19) =13392a(20) =14760a(21) =16392a(22) =17019a(23) =22366a(24) =24384a(25) =39424a(26) =57240a(27) =67488a(28) =68237a(29) =73276