k is the first integer such that phi(k+n) | sigma(k)+n.

Terms

a(0) =1a(1) =1a(2) =10a(3) =1a(4) =6a(5) =1a(6) =10a(7) =1a(8) =7a(9) =16a(10) =5a(11) =1a(12) =3a(13) =2a(14) =10a(15) =1a(16) =14a(17) =1a(18) =10