A167395 Smallest single or isolated composite>n-th single or isolated prime.

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

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