Numbers k such that (sigma(k)-k) - Sum_{p|k} p^2 = -1.

Terms

a(0) =4a(1) =45a(2) =175a(3) =1573a(4) =5491a(5) =26071a(6) =72283a(7) =212341a(8) =367993a(9) =1050703a(10) =1247941a(11) =2608891a(12) =3352351a(13) =5799421a(14) =7040833a(15) =7722991a(16) =11800141a(17) =13766161a(18) =19609831a(19) =22345963a(20) =30273673a(21) =42022741a(22) =73911181a(23) =80434513a(24) =98397223a(25) =141963643a(26) =184867531a(27) =215639401a(28) =235646491a(29) =264196483