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 A329483 #16 Feb 01 2022 00:30:51 %S A329483 0,0,0,4,12,28,136,488,2624,12420,64120,313584,1675648,8536072 %N A329483 Number of quasi-magic (only short lines are magic) knight's tours on a 4 X 2n board. %C A329483 A quasi-magic tour is a special type of semi-magic tour in which the non-magic lines add to only two different values. Such tours are of interest on boards where magic tours don't exist. %H A329483 G. P. Jelliss, <a href="https://www.mayhematics.com/j/gpj26.htm">Quasi-Magic Tours</a>, The Games and Puzzles Journal #26, April-June 2003. %H A329483 Awani Kumar, <a href="https://arxiv.org/abs/1802.09340">Studies in Tours of Knight on Rectangular Boards</a>, arXiv:1802.09340 [math.GM], 2018. %e A329483 Example of 4 X 14 quasi-magic knight's tour. All short lines sum to 114 and the long lines sum to 397 and 401, that is, 399 +- 2. %e A329483 3 56 25 32 5 52 21 36 9 48 11 40 15 44 %e A329483 26 29 4 53 24 33 8 49 20 37 18 43 12 41 %e A329483 55 2 31 28 51 6 35 22 47 10 39 14 45 16 %e A329483 30 27 54 1 34 23 50 7 38 19 46 17 42 13 %Y A329483 Cf. A328816, A329370. %K A329483 nonn,hard,more %O A329483 1,4 %A A329483 _Awani Kumar_, Nov 14 2019