[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A209194
Sophie Germain primes that are also highly cototient numbers.
0
2, 23, 83, 89, 113, 419, 509, 659, 1049, 1889, 3359, 4409, 9029, 10709, 11549, 13649, 20789, 23099, 57329, 84629, 90089, 113189, 115499, 207479, 210209, 270269, 314159, 324869, 330329, 420419, 570569, 658349, 660659, 810809, 840839, 1021019, 1138829
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..37.
PrimeFan, Listing of Esoteric Integer Sequences
FORMULA
A005384 INTERSECT A100827.
CROSSREFS
Cf. A100827.
Sequence in context: A042679 A354691 A345701 * A097232 A339474 A222564
Adjacent sequences: A209191 A209192 A209193 * A209195 A209196 A209197
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 05 2012
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified October 5 04:48 EDT 2024. Contains 376530 sequences.
License Agreements, Terms of Use, Privacy Policy