|
Search: id:A091121
|
|
|
| A091121 |
|
Number of primes of the form 7k+2 less than 10^n. |
|
+0
6
|
|
| 1, 4, 27, 203, 1584, 13065, 110771, 960114, 8474796, 75841428
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
Computed by T. D. Noe (noe(AT)sspectra.com), Dec 19, 2003.
|
|
LINKS
|
Eric Weisstein's World of Mathematics, Modular Prime Counting Function
|
|
CROSSREFS
|
Cf. A091120, A091122, A091123, A091124, A091125.
Sequence in context: A036753 A164311 A091125 this_sequence A026005 A059391 A161120
Adjacent sequences: A091118 A091119 A091120 this_sequence A091122 A091123 A091124
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
Eric Weisstein (eric(AT)weisstein.com), Dec 19, 2003
|
|
EXTENSIONS
|
a(10) from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003
|
|
|
Search completed in 0.002 seconds
|
