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 A330758 #25 Jan 18 2020 13:24:48 %S A330758 0,0,0,28,34,484 %N A330758 Number of quasi-magic (only short lines are magic) knight's tours on a 6 X 2n board. %C A330758 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 A330758 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 A330758 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 A330758 Example of 6 X 10 quasi-magic knight's tour. All short lines add to 183 and the long lines add to either 299 or 311, that is, 305 +- 6. %e A330758 01 20 59 42 17 26 29 44 15 46 %e A330758 60 41 02 19 28 43 16 47 30 13 %e A330758 21 04 39 58 25 18 27 14 45 48 %e A330758 40 57 22 03 54 51 08 33 12 31 %e A330758 05 38 55 24 07 36 53 10 49 34 %e A330758 56 23 06 37 52 09 50 35 32 11 %Y A330758 Cf. A328872, A329483, A330529. %K A330758 nonn,hard,more %O A330758 1,4 %A A330758 _Awani Kumar_, Jan 18 2020