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A120382 Even numbers n such that 3*n-1 and 3*n+1 are not prime. 0
40, 48, 62, 68, 72, 82, 96, 100, 108, 114, 138, 142, 158, 172, 176, 178, 184, 194 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A197734 A114839 A179435 * A062909 A167327 A173337

Adjacent sequences:  A120379 A120380 A120381 * A120383 A120384 A120385

KEYWORD

easy,nonn

AUTHOR

Pierre CAMI (pierre-cami(AT)bbox.fr), Jun 29 2006

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Last modified February 13 20:37 EST 2012. Contains 205554 sequences.