The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A053873 Numbers n such that OEIS sequence A_n contains n. 5

%I #42 Dec 25 2022 19:55:25

%S 1,2,3,5,6,8,10,14,16,19,26,27,36,37,52,59,62,69,72,115,119,120,121,

%T 134,161,164,174,177,188,189,190,193,194,195,196,209,224,265,267,277

%N Numbers n such that OEIS sequence A_n contains n.

%C A number n is in this sequence iff n appears anywhere in the terms of A_n, not just in the terms that are visible in the entry.

%C Is 53873 in this sequence? (A rhetorical question!) - _Tanya Khovanova_, Aug 09 2007

%C Is 53169 in this sequence? (A rhetorical question!). - _Raymond Wang_, Oct 07 2008

%C I skipped 241 since it appears that A000241(14) > 241, but as the 13th and further terms are not known this is not certain. The next term in the sequence is almost surely 319, but finding the least k for which A000319(k) = 319 requires calculating a chaotic sequence to high precision. - _Charles R Greathouse IV_, Jul 20 2007

%C 241 is not in this sequence, since A000241(13) <= 225 and A000241(14) >= 0.8594*315 (see comments in A000241). - _Danny Rorabaugh_, Mar 13 2015

%H Charles R. Greathouse IV, <a href="/A053873/a053873.txt">Illustration of initial terms</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GraphCrossingNumber.html">Graph Crossing Number</a>

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/On-Line_Encyclopedia_of_Integer_Sequences#Self-referential_sequences">Self-referentiality in the OEIS</a>

%H <a href="/index/Se#selfies">Index entries for sequences whose definition involves A_n (or An)</a>.

%e 4 is not in A000004, so 4 is not in this sequence.

%e 60 is not in A000060, so 60 is not in this sequence.

%e 86 is not in A000086, so 86 is not in this sequence.

%Y Complement of A053169.

%K nonn,more,fini

%O 1,2

%A _Jens Voß_, Mar 30 2000

%E More terms from _N. J. A. Sloane_, Aug 24 2006

%E a(23)-a(25) from _Charles R Greathouse IV_, Aug 30 2006

%E a(26)-a(40) from _Charles R Greathouse IV_, Jul 20 2007

%E Typo in one entry corrected by _Olaf Voß_, Feb 25 2008

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 May 13 12:32 EDT 2024. Contains 372519 sequences. (Running on oeis4.)