id:A112775 - OEIS Search Results

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Numbers n such that 6n+1 is semiprime.

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4, 8, 9, 14, 15, 19, 20, 22, 24, 28, 31, 34, 36, 39, 41, 42, 43, 44, 48, 49, 50, 53, 59, 60, 65, 67, 69, 71, 74, 75, 78, 80, 82, 84, 85, 86, 88, 89, 92, 93, 94, 97, 98, 108, 109, 111, 113, 114, 116, 117, 120, 124, 127, 130, 132, 133, 136, 139, 140, 144, 145, 148, 149 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Resulting semiprimes in A112771.`
	FORMULA	`a(n) = (A112771(n) - 1)/6.`
	CROSSREFS	`Sequence in context: A060299 A120512 A046954 this_sequence A107747 A121763 A110087` `Adjacent sequences: A112772 A112773 A112774 this_sequence A112776 A112777 A112778`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 15 2005`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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