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A116039 n+p(n)+p(p(n)) is a semiprime (A001358), where p(n) denotes the n-th prime. 1
1, 2, 8, 9, 11, 12, 18, 19, 22, 23, 26, 29, 33, 35, 43, 47, 50, 53, 57, 59, 61, 69, 75, 76, 77, 78, 81, 89, 103, 105, 109, 112, 124, 125, 131, 135, 140, 141, 142, 143, 146, 151, 153, 155, 160, 166, 170, 175, 176, 177, 181, 189, 209, 211, 215, 216, 220, 225, 226 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

112+p(112)+p(p(112)) = 5242 = 2*2621.

CROSSREFS

Cf. A001358, A116038.

Sequence in context: A037456 A019511 A103190 * A030334 A020676 A086678

Adjacent sequences:  A116036 A116037 A116038 * A116040 A116041 A116042

KEYWORD

nonn

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006

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Last modified February 16 17:11 EST 2012. Contains 205938 sequences.