Numbers n such that phi(n) = phi(n+8), with Euler's totient function phi=A000010.

Terms

a(0) =13a(1) =16a(2) =19a(3) =25a(4) =28a(5) =32a(6) =40a(7) =70a(8) =104a(9) =128a(10) =175a(11) =182a(12) =209a(13) =280a(14) =296a(15) =488a(16) =551a(17) =584a(18) =657a(19) =715a(20) =806a(21) =910a(22) =1232a(23) =1256a(24) =1544a(25) =1602a(26) =2022a(27) =2048a(28) =2216a(29) =2288