Numbers k such that psi(k) = psi(k + 2) and phi(k) = phi(k + 2), where psi(k) is the Dedekind psi function (A001615) and phi(k) is the Euler totient function (A000010).

A330702

Numbers k such that psi(k) = psi(k + 2) and phi(k) = phi(k + 2), where psi(k) is the Dedekind psi function (A001615) and phi(k) is the Euler totient function (A000010).

Terms

    a(0) =70a(1) =308a(2) =572a(3) =2132a(4) =4292a(5) =6764a(6) =12212a(7) =32804a(8) =72836a(9) =79292a(10) =169724a(11) =198596a(12) =207692a(13) =289052a(14) =362972a(15) =392426a(16) =545876a(17) =547724a(18) =611612a(19) =651932a(20) =678812a(21) =687812a(22) =809252a(23) =842012a(24) =868436a(25) =930932a(26) =1030772a(27) =1032956a(28) =1122932a(29) =1336052

External references