a(n) is the least number k such that the continued fraction for phi(k)/k contains exactly n elements.

A342867

a(n) is the least number k such that the continued fraction for phi(k)/k contains exactly n elements.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =15a(4) =35a(5) =33a(6) =65a(7) =215a(8) =221a(9) =551a(10) =455a(11) =2001a(12) =3417a(13) =3621a(14) =11523a(15) =16705a(16) =16617a(17) =69845a(18) =107545a(19) =157285a(20) =324569a(21) =358883a(22) =1404949a(23) =1569295a(24) =3783970a(25) =3106285a(26) =7536065a(27) =12216295a(28) =10589487a(29) =24038979

External references