|
| |
|
|
A091119
|
|
Number of primes of the form 6k+5 less than 10^n.
|
|
1
|
| |
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
Computed by T. D. Noe, Dec 19, 2003.
|
|
|
LINKS
|
Table of n, a(n) for n=1..10.
Eric Weisstein's World of Mathematics, Modular Prime Counting Function
|
|
|
FORMULA
|
a(n)=A006880(n)-2-A091115(n). - R. J. Mathar, Jul 20 2007
|
|
|
CROSSREFS
|
Cf. A091118. Equals -1+A091116.
Sequence in context: A225785 A098206 A104911 * A046023 A183721 A180797
Adjacent sequences: A091116 A091117 A091118 * A091120 A091121 A091122
|
|
|
KEYWORD
|
nonn,more
|
|
|
AUTHOR
|
Eric W. Weisstein, Dec 19, 2003
|
|
|
EXTENSIONS
|
a(10) from Robert G. Wilson v, Dec 22 2003
|
|
|
STATUS
|
approved
|
| |
|
|
