Numbers n such that (sigma(n-2)+sigma(n+2))/2 = sigma(n).

Terms

a(0) =5a(1) =8a(2) =32a(3) =44a(4) =116a(5) =184a(6) =356a(7) =764a(8) =815a(9) =1004a(10) =1012a(11) =1205a(12) =1338a(13) =1345a(14) =1436a(15) =2636a(16) =2876a(17) =3126a(18) =3644a(19) =5156a(20) =5305a(21) =5804a(22) =6236a(23) =7192a(24) =7542a(25) =7556a(26) =8564a(27) =9356a(28) =9404a(29) =10196