Numbers m that divide Sum_{k=1..m} phi(k).

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =16a(5) =25a(6) =36a(7) =249a(8) =617a(9) =1296a(10) =13763a(11) =76268a(12) =189074a(13) =783665a(14) =1102394a(15) =3258466a(16) =3808854a(17) =7971034a(18) =15748051a(19) =27746990a(20) =41846733a(21) =153673168a(22) =195853251a(23) =302167272a(24) =402296412a(25) =732683468a(26) =807656448a(27) =844492262a(28) =848152352a(29) =1122039882