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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A279062 Initial terms of the arithmetic progressions in A278735. 3
3, 3, 5, 353, 13297, 1561423, 291461857 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The first set of 4 prime-indexed primes in arithmetic progression (353, 431, 509, and 587) contains consecutive terms of A142160.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

a(4) = 353 because 353 = prime(prime(20)), 431 = prime(prime(23)), 509 = prime(prime(25)), 587 = prime(prime(28)), and 431-353 = 509-431 = 587-509 = 78.

The corresponding arithmetic progressions are

3;

3, 5;

5, 11, 17;

353, 431, 509, 587;

13297, 21937, 30577, 39217, 47857;

1561423, 2716423, 3871423, 5026423, 6181423, 7336423;

...

CROSSREFS

Left border of A279021.

Cf. A006450, A113827, A142160, A274825, A278735.

Sequence in context: A248592 A132809 A265960 * A005882 A327824 A189915

Adjacent sequences:  A279059 A279060 A279061 * A279063 A279064 A279065

KEYWORD

nonn,hard,more

AUTHOR

Bobby Jacobs, Dec 05 2016

EXTENSIONS

a(7) from Charles R Greathouse IV, Dec 27 2016

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 January 20 11:11 EST 2020. Contains 331083 sequences. (Running on oeis4.)