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A096533 Number of composite numbers not greater than the n-th composite number that divide at least one other number not greater than the n-th composite number. 1
0, 0, 1, 1, 1, 2, 2, 2, 3, 4, 5, 5, 5, 6, 6, 6, 6, 7, 8, 9, 9, 9, 9, 10, 10, 10, 11, 12, 13, 13, 13, 14, 14, 15, 15, 16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 21, 22, 22, 23, 24, 24, 24, 25, 25, 26, 27, 27, 27, 28, 28, 28, 28, 29, 30, 30, 31, 31, 31, 31, 32, 33, 33, 34, 35, 36 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

a(n) = A065855(floor(A002808(n)/2));

A096532(n) + a(n) = n.

LINKS

Table of n, a(n) for n=1..76.

CROSSREFS

Sequence in context: A162352 A285509 A194813 * A230413 A029096 A194820

Adjacent sequences:  A096530 A096531 A096532 * A096534 A096535 A096536

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 23 2004

STATUS

approved

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Last modified October 3 13:22 EDT 2022. Contains 357237 sequences. (Running on oeis4.)