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A049036 Mean gap between successive primes up to n-th prime is an integer. 4
2, 10, 68, 438, 442, 2616, 100350, 100354, 100360, 637198, 637306, 27066970, 27067050, 27067102, 27067114, 27067116, 179992840, 179993002, 55762149072, 382465573492, 2636913002950 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
C. K. Caldwell, Prime Gaps
FORMULA
n such that (n - 1) divides (prime(n) - n - 1), or equivalently,
n such that (n - 1) divides (prime(n) - 2).
EXAMPLE
a(2)=10 since 9 (number of gaps) divides 18 (number of composites less than 29, the 10th prime). Therefore the "average" gap less than 29 is exactly 2.
CROSSREFS
Sequence in context: A108397 A325995 A366178 * A208561 A152620 A152621
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
More terms from Kok Seng Chua (chuaks(AT)ihpc.nus.edu.sg), May 25 2000
Three more terms from Phil Carmody, Jul 23 2003
STATUS
approved

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Last modified March 19 03:21 EDT 2024. Contains 370952 sequences. (Running on oeis4.)