A075862 - OEIS

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A075862

Numbers n such that the least k such that (n-k) divides (n+k) is prime.

4, 5, 6, 7, 9, 10, 13, 14, 15, 19, 21, 22, 26, 31, 33, 34, 38, 39, 43, 46, 51, 57, 58, 61, 62, 69, 73, 74, 82, 86, 87, 93, 94, 103, 106, 109, 111, 118, 122, 123, 129, 134, 139, 141, 142, 146, 151, 158, 159, 166, 177, 178, 181, 183, 193, 194, 199, 201, 202, 206, 213 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) seems to be asymptotic to n*log(n) and a(n)<prime(n) for n>3`
	CROSSREFS	`Sequence in context: A066485 A079445 A120173 * A088685 A022299 A099049` `Adjacent sequences: A075859 A075860 A075861 * A075863 A075864 A075865`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 15 2002`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.