

A053873


Numbers n such that OEIS sequence A_n contains n.


3



1, 2, 3, 5, 6, 8, 10, 14, 16, 19, 26, 27, 36, 37, 52, 59, 62, 69, 72, 115, 119, 120, 121, 134, 161, 164, 174, 177, 188, 189, 190, 193, 194, 195, 196, 209, 224, 265, 267, 277
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OFFSET

1,2


COMMENTS

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.
Is 53873 in this sequence? (A rhetorical question!)  Tanya Khovanova, Aug 09 2007
Is 53169 in this sequence? (A rhetorical question!).  Raymond Wang, Oct 07 2008
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
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


LINKS

Table of n, a(n) for n=1..40.
Charles R. Greathouse IV, Illustration of initial terms
Eric Weisstein's World of Mathematics, Graph Crossing Number
Wikipedia, Selfreferentiality in the OEIS


EXAMPLE

4 is not in A000004, so 4 is not in this sequence.
60 is not in A000060, so 60 is not in this sequence.
86 is not in A000086, so 86 is not in this sequence.


CROSSREFS

Complement of A053169.
Sequence in context: A056837 A001971 A122493 * A240314 A118053 A252482
Adjacent sequences: A053870 A053871 A053872 * A053874 A053875 A053876


KEYWORD

nonn,more


AUTHOR

Jens Voß, Mar 30 2000


EXTENSIONS

More terms from N. J. A. Sloane, Aug 24 2006
a(23)a(25) from Charles R Greathouse IV, Aug 30 2006
a(26)a(40) from Charles R Greathouse IV, Jul 20 2007
Typo in one entry corrected by Olaf Voß, Feb 25 2008


STATUS

approved



