Numbers k for which sigma(k - x) + sigma(k + x) = 9*k has at least one nonnegative solution.

Terms

a(0) =361881a(1) =792960a(2) =835072a(3) =837312a(4) =846720a(5) =917280a(6) =944608a(7) =946176a(8) =1509236a(9) =1517264a(10) =1630880a(11) =1635600a(12) =1636614a(13) =1697560a(14) =1834560a(15) =1914092a(16) =1926336a(17) =1927692a(18) =1941264a(19) =2387120a(20) =2450112a(21) =2474316a(22) =2494464a(23) =2546656a(24) =2573088a(25) =2624832a(26) =2685394a(27) =2705680a(28) =2840468a(29) =2913120