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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177800 The maximal length of the chain of consecutive primes starting with A177798(n) such that all of them are odious. 2
1, 3, 6, 9, 11, 15, 17, 18, 22, 23, 25, 26, 28, 29, 33, 34, 35, 36, 38, 39, 42 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

In contrast to sequence of all positive integers, where the length of a chain of consecutive odious numbers cannot exceed 2, we conjecture that over primes the length is not bounded.

LINKS

Table of n, a(n) for n=1..21.

CROSSREFS

Cf. A000069 (odious numbers), A177798, A177748, A001969, A027697, A027699.

Sequence in context: A166265 A145283 A298792 * A310147 A310148 A310149

Adjacent sequences: A177797 A177798 A177799 * A177801 A177802 A177803

KEYWORD

nonn,base,more

AUTHOR

Vladimir Shevelev, Dec 12 2010

EXTENSIONS

Extended by D. S. McNeil, Dec 12 2010

a(20)-a(21) from Amiram Eldar, Dec 09 2020

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 November 29 14:48 EST 2022. Contains 358431 sequences. (Running on oeis4.)