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A066683 Number of badly sieved numbers <= n. 3
0, 1, 2, 2, 3, 3, 4, 5, 5, 5, 6, 7, 8, 8, 8, 8, 9, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 14, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 21, 22, 22, 22, 23, 23, 23, 23, 23, 23, 24, 24, 25, 25, 26, 26, 26, 26 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..66.

FORMULA

a(n) = Sum_{k=1..n} A099104(k).

CROSSREFS

Cf. A099104, A066680, A000720.

Sequence in context: A082997 A085970 A238884 * A055038 A276796 A309093

Adjacent sequences:  A066680 A066681 A066682 * A066684 A066685 A066686

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Dec 31 2001

STATUS

approved

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Last modified September 16 07:19 EDT 2021. Contains 347469 sequences. (Running on oeis4.)