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A167395 Smallest single or isolated composite>n-th single or isolated prime. 0
4, 30, 42, 60, 60, 72, 102, 102, 102, 102, 138, 138, 138, 180, 180, 180, 180, 228, 228, 240, 270, 270, 270, 282, 312, 312, 348, 348, 348, 420, 420, 420, 420, 420, 420, 420, 420, 420, 420, 462, 462, 462, 462, 522, 522, 522, 522, 522, 522, 522, 570, 570, 570 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

CROSSREFS

Cf. A007510, A014574.

Sequence in context: A164820 A022387 A108559 * A327434 A268037 A248528

Adjacent sequences:  A167392 A167393 A167394 * A167396 A167397 A167398

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Nov 02 2009

EXTENSIONS

Entries checked by R. J. Mathar, May 30 2010

STATUS

approved

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Last modified November 17 10:37 EST 2019. Contains 329225 sequences. (Running on oeis4.)