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A113420 Number of Pierpont primes less than 10^n. 1
4, 10, 18, 25, 32, 42, 50, 58, 65, 72, 78, 83, 93, 106, 114, 125, 139, 143, 149, 157, 167, 176, 183, 194, 198, 209, 219, 221, 229, 237, 243, 250, 260, 270, 273, 278, 286, 294, 304, 314, 317, 323, 327, 337, 342, 352, 362, 371, 377, 394, 399, 405, 414, 420 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

Eric Weisstein's World of Mathematics, Pierpont Prime

CROSSREFS

Cf. A005109, A113412.

Sequence in context: A079287 A113804 A107372 * A053767 A225270 A073621

Adjacent sequences:  A113417 A113418 A113419 * A113421 A113422 A113423

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, Oct 29 2005

STATUS

approved

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Last modified March 22 01:06 EDT 2019. Contains 321406 sequences. (Running on oeis4.)