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A067809 Composite n such that sigma(3*n) < prime(n). 0
57, 69, 77, 81, 85, 87, 91, 93, 95, 99, 111, 115, 117, 119, 121, 123, 125, 129, 133, 135, 141, 143, 145, 147, 153, 155, 159, 161, 165, 169, 171, 175, 177, 183, 185, 187, 189, 194, 195, 201, 202, 203, 205, 206, 207, 209, 213, 214, 215, 217, 218, 219, 221, 225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

CROSSREFS

Sequence in context: A216183 A056082 A218562 * A176636 A072054 A230956

Adjacent sequences:  A067806 A067807 A067808 * A067810 A067811 A067812

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 07 2002

STATUS

approved

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Last modified January 17 23:37 EST 2020. Contains 330995 sequences. (Running on oeis4.)