login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A093944 Primes of the form 9*10^n + 7*R_n, where R_n is the repunit (A002275) of length n. 1
97, 977, 97777, 97777777777777777777, 97777777777777777777777777777, 97777777777777777777777777777777777777777777777777777777777777777777777777 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A056727 (corresponding n).

Sequence in context: A070845 A093297 A068852 * A127748 A127828 A186075

Adjacent sequences:  A093941 A093942 A093943 * A093945 A093946 A093947

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Apr 17 2004

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 23:53 EST 2012. Contains 205689 sequences.