OFFSET
1,1
FORMULA
a(n) = A002410(n) - prime(n).
EXAMPLE
14 - 2 = 12, 21 - 3 = 18, 25 - 5 = 20.
PROG
(PARI) lista(nn) = my(v=apply(round, lfunzeros(lzeta, nn))); vector(#v, n, v[n] - prime(n)); \\ Michel Marcus, Sep 14 2018
CROSSREFS
KEYWORD
sign
AUTHOR
Mark A. Thomas, Sep 14 2018
STATUS
approved