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A175568 Numbers n with property that (2k+1)n-2k k=0..8 are all prime. 2
4747505071, 10817047081, 21071155561, 41279978041, 44304317821, 49710893611, 58845917971, 79925475841, 96466884361, 106120099471, 107001847261 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All terms are of form 210*m+1 with m = 22607167, 51509748, 100338836, 196571324, 210972942, 236718541, 280218657,380597504, 459366116, 505333807, 509532606.

LINKS

Table of n, a(n) for n=1..11.

CROSSREFS

Cf. A175566 a(n) = the least prime p such that (2*k + 1)*p - 2*k, k=1..n are all prime.

Sequence in context: A050259 A249972 A233494 * A224472 A015384 A233615

Adjacent sequences:  A175565 A175566 A175567 * A175569 A175570 A175571

KEYWORD

nonn

AUTHOR

Zak Seidov, Jul 13 2010, Jul 14 2010

STATUS

approved

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Last modified October 18 12:18 EDT 2019. Contains 328160 sequences. (Running on oeis4.)