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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A167841 Acute-angled primes. 5
103, 107, 109, 131, 151, 163, 173, 181, 191, 193 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes in A135601.

Primes whose structure of digits represent an acute angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right. This sequence is finite.

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A212542 A074675 A235155 * A213311 A161402 A318295

Adjacent sequences:  A167838 A167839 A167840 * A167842 A167843 A167844

KEYWORD

base,more,nonn,fini,less

AUTHOR

Omar E. Pol, Nov 13 2009

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 19 17:55 EDT 2018. Contains 316376 sequences. (Running on oeis4.)