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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 Cf. A049038, A049066, A228543. Sequence in context: A245000 A108397 A325995 * A208561 A152620 A152621 Adjacent sequences:  A049033 A049034 A049035 * A049037 A049038 A049039 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 October 17 14:23 EDT 2019. Contains 328113 sequences. (Running on oeis4.)