This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A059765 #14 Jul 09 2021 15:50:32 %S A059765 1,2,3,4,5,6,7,8,9,10,12,16 %N A059765 Possible sizes of the torsion group of an elliptic curve over the rationals Q. This is a finite sequence. %D A059765 Joseph H. Silverman, The Arithmetic of Elliptic Curves, Graduates texts in mathematics 106 Springer-Verlag. %H A059765 <a href="/index/Gre#groups">Index entries for sequences related to groups</a> %F A059765 Numbers n such that A221362(n) > 0. - _Jonathan Sondow_, May 10 2014 %e A059765 a(1) corresponds to the trivial group. %e A059765 a(2) corresponds to the cyclic group C_2. %e A059765 a(3) corresponds to the cyclic group C_3. %e A059765 a(4) corresponds to the cyclic group C_4 and the product C_2 x C_2. %e A059765 a(5) corresponds to the cyclic group C_5. %e A059765 a(6) corresponds to the cyclic group C_6. %e A059765 a(7) corresponds to the cyclic group C_7. %e A059765 a(8) corresponds to the cyclic group C_8 and the product C_2 x C_4. %e A059765 a(9) corresponds to the cyclic group C_9. %e A059765 a(10) corresponds to the cyclic group C_10. %e A059765 a(12) corresponds to the cyclic group C_12 and the product C_2 x C_6. %e A059765 a(16) corresponds to the product C_2 x C_8. %Y A059765 Cf. A221362. %K A059765 nonn,fini,full %O A059765 1,2 %A A059765 Noam Katz (noamkj(AT)hotmail.com), Feb 21 2001