login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A045719 Number of primes embedded in n-th prime. 2
0, 0, 0, 0, 0, 2, 2, 0, 2, 1, 2, 3, 0, 1, 1, 2, 1, 0, 1, 2, 3, 2, 1, 0, 2, 1, 3, 4, 1, 6, 5, 6, 10, 5, 5, 2, 6, 6, 7, 10, 9, 2, 3, 5, 9, 3, 2, 3, 2, 2, 3, 5, 3, 3, 3, 3, 2, 5, 3, 2, 5, 5, 4, 6, 4, 10, 4, 6, 7, 3, 3, 6, 6, 6, 9, 2, 5, 9, 1, 0, 5, 3, 5, 2, 3, 2, 0, 4, 3, 3, 4, 5, 2, 5, 0, 3, 2, 3, 5, 2, 4, 2, 4, 3, 6, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
COMMENTS
a(n) counts permuted subsequences of digits of prime(n) which denote primes distinct from prime(n).
LINKS
EXAMPLE
For example a(11)=3 because 37 generate 3 primes with its digits: 3, 7, 73
CROSSREFS
Cf. A000040.
Sequence in context: A272011 A352362 A236374 * A114906 A259179 A214667
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
More terms from David W. Wilson
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)