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A091121
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Number of primes of the form 7k+2 less than 10^n.
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5
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OFFSET
| 1,2
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COMMENTS
| Computed by T. D. Noe (noe(AT)sspectra.com), Dec 19, 2003.
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LINKS
| Eric Weisstein's World of Mathematics, Modular Prime Counting Function
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CROSSREFS
| Cf. A091120, A091122, A091123, A091124, A091125.
Sequence in context: A164311 A091125 A193221 * A026005 A059391 A190738
Adjacent sequences: A091118 A091119 A091120 * A091122 A091123 A091124
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KEYWORD
| nonn,more
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Dec 19, 2003
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EXTENSIONS
| a(10) from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003
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