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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A050986 Number of n-digit right-truncatable primes. 14
4, 9, 14, 16, 15, 12, 8, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 31, 265-267, 1977.

LINKS

Table of n, a(n) for n=1..8.

Jens Kruse Andersen, Right-truncatable primes

Eric Weisstein's World of Mathematics, Truncatable Prime.

Index entries for sequences related to truncatable primes

Index entries for sequences related to numbers of primes in various ranges

CROSSREFS

Cf. A033664, A024785, A032437, A020994, A024770, A052023, A052024, A052025, A050987.

Sequence in context: A091880 A141560 A071864 * A261445 A034259 A010452

Adjacent sequences:  A050983 A050984 A050985 * A050987 A050988 A050989

KEYWORD

base,nonn,easy,fini,full

AUTHOR

Eric W. Weisstein

EXTENSIONS

Edited by Ray Chandler, Mar 13 2007

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 December 7 11:42 EST 2016. Contains 278874 sequences.