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 A374946 #12 Aug 09 2024 08:03:06 %S A374946 0,1,17,793,275557,831699598 %N A374946 a(n) is the number of suitably connected Legendrian n-mosaics that form a Legendrian knot. %C A374946 A Legendrian n-mosaic is an n X n array of the 10 tiles given in Figure 5 of Pezzimenti and Pandey. These tiles represent part of a Legendrian curve in the front projection. A Legendrian n-mosaic is suitably connected if the connection points of each tile coincide with those of the contiguous tiles. %H A374946 Margaret Kipe, <a href="/A374946/a374946.py.txt">Python</a> %H A374946 Margaret Kipe, <a href="/A374946/a374946.rs.txt">Rust</a> %H A374946 S. Pezzimenti and A. Pandey, <a href="https://doi.org/10.1142/S021821652250002X">Geography of Legendrian knot mosaics</a>, Journal of Knot Theory and its Ramifications, 31 (2022), article no. 2250002, 1-22. %e A374946 For n = 2 there is exactly a(2) = 1 Legendrian 2-mosaic forming the front projection of a Legendrian knot, namely the Legendrian unknot with maximal Thurston-Bennequin invariant. %o A374946 (Python, Rust) //See Margaret Kipe Links %Y A374946 Cf. A374947, A374945, A374944, A374943, A374942, A374939. %K A374946 nonn,hard,more %O A374946 1,3 %A A374946 _Margaret Kipe_, _Samantha Pezzimenti_, _Leif Schaumann_, _Luc Ta_, _Wing Hong Tony Wong_, Jul 24 2024