id:A075278 - OEIS Search Results

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Interprimes which are of the form s*prime, s=3.

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6, 9, 15, 21, 39, 69, 93, 111, 129, 309, 381, 393, 453, 489, 501, 687, 723, 771, 879, 933, 939, 1011, 1167, 1299, 1527, 1563, 1569, 1839, 1941, 1983, 2157, 2217, 2229, 2271, 2391, 2463, 2661, 2811, 2859, 2913, 3039, 3099, 3189, 3453, 3459, 3651, 3849 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Interprimes which are of the form s*prime are in A075277-A075296 (s = 2-21). Case s = 1 is impossible.`
	EXAMPLE	`39 is an interprime and 39/3 = 13 is prime.`
	MATHEMATICA	`s=3; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 1000}], PrimeQ[ #/s]&]`
	CROSSREFS	`Cf. A075277--A075296.` `Sequence in context: A020147 A001748 A097426 this_sequence A102971 A023885 A031209` `Adjacent sequences: A075275 A075276 A075277 this_sequence A075279 A075280 A075281`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Sep 12 2002`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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