Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).

A219033

Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).

Terms

    a(0) =434a(1) =2170a(2) =4774a(3) =5642a(4) =7378a(5) =8246a(6) =9982a(7) =10850a(8) =12586a(9) =16058a(10) =17794a(11) =18662a(12) =20398a(13) =23002a(14) =23870a(15) =25606a(16) =26474a(17) =28210a(18) =29078a(19) =30814a(20) =31682a(21) =34286a(22) =36022a(23) =36890a(24) =38626a(25) =41230a(26) =42098a(27) =43834a(28) =44702a(29) =47306

External references