A002088,A015614,A018805 errata

[David W. Wilson]

Michael Somos wrote:

> %F A018805 a(n) = 2 ( Sum phi(j), j=1..n ) - 1; a(n) = n^2 - Sum a([n/j]),
>            j=2..n.
> %A A018805 David W. Wilson (wilson at ctron.com)

Isn't  a(n) = n^2 - Sum (j = 2..n, a([n/j]))   a cute recurrence?