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 A145532 Number of numbers removed in each step of Eratosthenes's sieve for 5!. 24
 59, 19, 7, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The number of steps in Eratosthenes's sieve for n! is A133228(n). The number of primes less than 5! is 120 - 59 - 19 - 7 - 4 - 1 = 30 = A003604(5). LINKS Table of n, a(n) for n=1..4. EXAMPLE a(1)=59 because in first step we removed all numbers divisible by 2 (=60) with the exception of the first one, i.e., 2. a(2)=19 because the number of numbers divisible by 3 and not divisible by 2 is 20 and we remove all with the exception of the first one, i.e., 3. CROSSREFS Cf. A003604, A133228, A145532-A145540. Sequence in context: A088665 A198378 A159250 * A152214 A033379 A122252 Adjacent sequences: A145529 A145530 A145531 * A145533 A145534 A145535 KEYWORD fini,nonn,full AUTHOR Artur Jasinski, Oct 12 2008 STATUS approved

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Last modified June 3 10:54 EDT 2023. Contains 363110 sequences. (Running on oeis4.)