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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A144311 The length of the longest sequence of consecutive integers, each equal 1 or -1 modulo at least one of the first n primes. 1
1, 5, 11, 29, 41, 65, 107, 149, 203, 257, 347, 527, 545, 617, 707, 869 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For n>1, a(n)==5 (mod 6).

LINKS

Table of n, a(n) for n=1..16.

StackExchange, OEIS A144311 Generating function, May 10 2016.

EXAMPLE

For the first, second and fourth terms the sequences are {1}, {1,2,3,4,5}, and {73,74,...,101}. - corrected by Felix A. Pahl, May 10 2016

CROSSREFS

Cf. A058989.

Sequence in context: A049489 A242383 A141785 * A074367 A088486 A174917

Adjacent sequences:  A144308 A144309 A144310 * A144312 A144313 A144314

KEYWORD

nonn,more,hard

AUTHOR

Andrew Carter (acarter09(AT)newarka.edu), Sep 17 2008

EXTENSIONS

a(8)-a(16) from Max Alekseyev, Nov 18 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 15 04:23 EST 2019. Contains 329991 sequences. (Running on oeis4.)