# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a053873 Showing 1-1 of 1 %I A053873 #42 Dec 25 2022 19:55:25 %S A053873 1,2,3,5,6,8,10,14,16,19,26,27,36,37,52,59,62,69,72,115,119,120,121, %T A053873 134,161,164,174,177,188,189,190,193,194,195,196,209,224,265,267,277 %N A053873 Numbers n such that OEIS sequence A_n contains n. %C A053873 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 A053873 Is 53873 in this sequence? (A rhetorical question!) - _Tanya Khovanova_, Aug 09 2007 %C A053873 Is 53169 in this sequence? (A rhetorical question!). - _Raymond Wang_, Oct 07 2008 %C A053873 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 A053873 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 A053873 Charles R. Greathouse IV, Illustration of initial terms %H A053873 Eric Weisstein's World of Mathematics, Graph Crossing Number %H A053873 Wikipedia, Self-referentiality in the OEIS %H A053873 Index entries for sequences whose definition involves A_n (or An). %e A053873 4 is not in A000004, so 4 is not in this sequence. %e A053873 60 is not in A000060, so 60 is not in this sequence. %e A053873 86 is not in A000086, so 86 is not in this sequence. %Y A053873 Complement of A053169. %K A053873 nonn,more,fini %O A053873 1,2 %A A053873 _Jens Voß_, Mar 30 2000 %E A053873 More terms from _N. J. A. Sloane_, Aug 24 2006 %E A053873 a(23)-a(25) from _Charles R Greathouse IV_, Aug 30 2006 %E A053873 a(26)-a(40) from _Charles R Greathouse IV_, Jul 20 2007 %E A053873 Typo in one entry corrected by _Olaf Voß_, Feb 25 2008 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE