id:A109558 - OEIS Search Results

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a(n) = If[Floor[2*Mod[(Prime[n + 1] - Prime[n])*PrimePi[n]/n, 8]] == 4, Prime[n]]

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7, 13, 19, 47, 53, 61, 73, 83, 131, 359, 389, 401, 449, 479, 491, 691, 709, 787, 811, 829, 919, 1021, 1039, 1051, 1153, 1171, 1249, 1399, 1471, 1627, 1699, 1723, 1801, 1879, 2017, 2029, 2053, 2069, 2089, 2099, 2143, 2297, 2399, 2447, 2579, 2621 (list; graph; listen)

	OFFSET	`0,1`
	MATHEMATICA	`a = Flatten[Table[If[Floor[2Mod[(Prime[n + 1] - Prime[n])PrimePi[n]/n, 8]] == 4, Prime[n], {}], {n, 1, 400}]]`
	CROSSREFS	`Cf. A001359.` `Sequence in context: A005471 A040096 A073648 this_sequence A108106 A165724 A144232` `Adjacent sequences: A109555 A109556 A109557 this_sequence A109559 A109560 A109561`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jun 27 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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