Numbers k such that sigma(k) = sigma(k+10).

Terms

a(0) =21a(1) =174a(2) =270a(3) =517a(4) =572a(5) =913a(6) =992a(7) =1002a(8) =1420a(9) =1633a(10) =1830a(11) =2622a(12) =2958a(13) =4170a(14) =4747a(15) =5539a(16) =7520a(17) =7544a(18) =7729a(19) =10184a(20) =10783a(21) =14863a(22) =16165a(23) =16520a(24) =19837a(25) =20935a(26) =21584a(27) =23161a(28) =26840a(29) =28544