Composite numbers k coprime to 13 such that k divides A006190(k) - Kronecker(13,k).

Terms

a(0) =4a(1) =8a(2) =9a(3) =119a(4) =399a(5) =649a(6) =1023a(7) =1179a(8) =1189a(9) =1199a(10) =1881a(11) =2703a(12) =3519a(13) =4081a(14) =4187a(15) =5151a(16) =7055a(17) =7361a(18) =10349a(19) =12871a(20) =13833a(21) =14041a(22) =15519a(23) =16109a(24) =18639a(25) =22593a(26) =23479a(27) =24769a(28) =26937a(29) =28421