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A112776 Numbers n such that 6n+5 is semiprime. 1
5, 10, 12, 15, 19, 23, 25, 26, 30, 33, 34, 35, 36, 47, 49, 50, 53, 54, 55, 56, 60, 61, 62, 65, 67, 68, 72, 78, 80, 82, 85, 87, 88, 90, 91, 96, 101, 103, 104, 105, 111, 114, 115, 117, 118, 121, 122, 124, 125, 127, 129, 130, 131, 133, 135, 141, 144, 148, 149, 150 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Resulting semiprimes in A108172.

FORMULA

a(n) = (A108172(n) - 5)/6.

CROSSREFS

Sequence in context: A050680 A162821 A059324 * A120063 A101839 A087920

Adjacent sequences:  A112773 A112774 A112775 * A112777 A112778 A112779

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 February 17 17:35 EST 2012. Contains 206061 sequences.