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 A381001 #12 Feb 14 2025 08:10:10 %S A381001 56,34,8,57,18,47,9,31,33,20,54,48,7,29,59,10,26,43,13,23,64,38,4,49, %T A381001 19,5,35,30,53,12,46,60,15,25,63,2,41,24,50,40,6,55,17,11,36,58,32,45, %U A381001 61,16,42,52,27,1,39,22,44,62,28,37,14,51,21,3 %N A381001 Georges Pfeffermann's 1890 bimagic square of order 8, read by rows. %C A381001 This is the first known bimagic square. It contains all numbers from 1 to 64; the magic sum is 260 and, when each number is squared, the magic sum is 11180. %H A381001 Christian Boyer, <a href="http://www.multimagie.com/English/Bimagic.htm">Bimagic squares</a>. %H A381001 Brady Haran and Matt Parker, <a href="https://www.youtube.com/watch?v=stpiBy6gWOA">A Magic Square Breakthrough</a>, YouTube Numberphile video, 2025. %H A381001 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %e A381001 The magic square is: %e A381001 [56 34 8 57 18 47 9 31] %e A381001 [33 20 54 48 7 29 59 10] %e A381001 [26 43 13 23 64 38 4 49] %e A381001 [19 5 35 30 53 12 46 60] %e A381001 [15 25 63 2 41 24 50 40] %e A381001 [ 6 55 17 11 36 58 32 45] %e A381001 [61 16 42 52 27 1 39 22] %e A381001 [44 62 28 37 14 51 21 3] %Y A381001 Cf. A052457, A111155, A380966, A381002. %K A381001 nonn,tabf,fini,full %O A381001 1,1 %A A381001 _Paolo Xausa_, Feb 13 2025