login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A060270 Distance of n-th primorial from previous prime. 7
1, 1, 11, 1, 1, 29, 23, 43, 41, 73, 59, 1, 89, 67, 73, 107, 89, 101, 127, 97, 83, 89, 1, 251, 131, 113, 151, 263, 251, 223, 179, 389, 281, 151, 197, 173, 239, 233, 191, 223, 223, 293, 593, 293, 457, 227, 311, 373, 257, 307, 313, 607, 347, 317, 307, 677, 467, 317 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Robert G. Wilson v, Table of n, a(n) for n = 2..1000

FORMULA

a(n)=1 for n=2, 3, 5, 6, 13, 24, 66, 68, 167, ... (A057704); a(n)=A055211(n) otherwise. - Jeppe Stig Nielsen, Oct 31 2003

EXAMPLE

Before 7th primorial 510481 is the largest prime. Its distance from 510510 is a(7)=29.

MAPLE

[seq(product(ithprime(j), j=1..n)-prevprime(product(ithprime(j), j=1..n)), n=2..50)];

CROSSREFS

Cf. A002110, A038710, A007014, A058044, A038711, A055211.

Sequence in context: A143685 A168647 A202767 * A202678 A202971 A202675

Adjacent sequences:  A060267 A060268 A060269 * A060271 A060272 A060273

KEYWORD

nonn

AUTHOR

Labos Elemer, Mar 23 2001

EXTENSIONS

More terms from Jeppe Stig Nielsen, Oct 31 2003

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 2 12:30 EDT 2021. Contains 346424 sequences. (Running on oeis4.)