id:A124198 - OEIS Search Results

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Numbers n such that 21*n + 1 is prime.

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2, 6, 10, 16, 18, 20, 22, 26, 30, 32, 36, 42, 46, 48, 50, 52, 62, 68, 70, 76, 82, 92, 96, 102, 108, 110, 116, 120, 126, 128, 130, 136, 146, 148 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`If n=148 then (21*n +1) = 3109 (prime).`
	CROSSREFS	`Cf. A024905, A124127.` `Sequence in context: A050895 A097022 A137236 this_sequence A032426 A096184 A030511` `Adjacent sequences: A124195 A124196 A124197 this_sequence A124199 A124200 A124201`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Dec 06 2006`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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