Composite squarefree numbers n such that p-2 divides n+2 for each prime p dividing n.

Terms

a(0) =273a(1) =54943a(2) =67303a(3) =199393a(4) =831283a(5) =1097305a(6) =1363723a(7) =1569103a(8) =1590433a(9) =3199579a(10) =3282433a(11) =3503773a(12) =5645563a(13) =5659333a(14) =9260053a(15) =9733843a(16) =9984115a(17) =10738033a(18) =16645363a(19) =19229533a(20) =32168743a(21) =37759363a(22) =38645233a(23) =50806585a(24) =53825497a(25) =56451373a(26) =58327423a(27) =62207173