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On the number of uncancelled elements in the sieve of Eratosthenes. (English) Zbl 0037.03001

Proc. Akad. Wet. Amsterdam 53, 803-812 (1950); Indag. Math. 12, 247-256 (1950).

Keywords:

Number theory
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Online Encyclopedia of Integer Sequences:

a(k) = k! * lim_{n->oo} card({ i*j; i=1..k, j=1..n })/n.