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A158910 First Differences of A061240. 2
18, 18, 18, 54, 18, 18, 18, 72, 18, 36, 18, 36, 36, 18, 18, 72, 18, 54, 36, 18, 36, 90, 18, 36, 90, 54, 36, 36, 18, 18, 54, 90, 36, 54, 18, 18, 54, 36, 18, 54, 18, 54, 18, 36, 90, 36, 54, 36, 54, 36, 18, 18, 54, 36, 72, 18, 108, 36, 36, 72, 18, 18, 126, 36, 54, 54, 54, 36, 126 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Since A061240 contains prime numbers of the form 9k+5, k even, all numbers here are multiples of 18.

CROSSREFS

Cf. A008600.

Sequence in context: A070742 A176064 A010857 * A040307 A022352 A050686

Adjacent sequences:  A158907 A158908 A158909 * A158911 A158912 A158913

KEYWORD

nonn,less

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Mar 30 2009

EXTENSIONS

Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 03 2009

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Last modified February 17 09:17 EST 2012. Contains 206009 sequences.