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A259866 Primes of the form 3*10^n + 1. 2
31, 3001, 30000001, 30000000001, 30000000000000000000000000001, 3000000000000000000000000000000000001, 30000000000000000000000000000000000000000000000000000000000000000001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663.

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663. [Annotated scanned copy]

FORMULA

a(n) = 3*10^A056807(n)+1. - R. J. Mathar, Jul 15 2015

CROSSREFS

Cf. A199683, A056807.

Sequence in context: A190527 A106205 A218424 * A217913 A174584 A276111

Adjacent sequences:  A259863 A259864 A259865 * A259867 A259868 A259869

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 08 2015

STATUS

approved

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Last modified June 18 15:25 EDT 2019. Contains 324213 sequences. (Running on oeis4.)