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A097882
a(n) = floor( n^2/prime(n) ).
1
0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16
OFFSET
1,4
LINKS
FORMULA
a(n) = floor(A000290(n)/A000040(n)).
A000290(n) = a(n)*A000040(n) + A069547(n).
MATHEMATICA
Table[Floor[n^2/Prime[n]], {n, 1, 50}] (* G. C. Greubel, May 21 2017 *)
PROG
(PARI) for(n=1, 50, print1(floor(n^2/prime(n)), ", ")) \\ G. C. Greubel, May 21 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Sep 02 2004
STATUS
approved