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 A384851 #11 Jun 16 2025 22:08:25 %S A384851 4,3,2,8,4,2,8,5,5,4,8,6,0,8,3,6,6,8,1,4,0,3,9,0,9,3,6,7,4,7,8,1,8,1, %T A384851 0,9,1,6,0,8,4,9,5,7,2,9,6,5,8,6,7,5,7,0,1,2,4,5,7,5,4,8,5,5,2,2,1,1, %U A384851 3,3,7,0,4,5,4,0,2,1,3,8,6,3,1,9,7,5,7 %N A384851 Decimal expansion of minimal radius of a circle that contains 14 non-overlapping unit disks. %H A384851 Dinesh B. Ekanayake and Douglas J. LaFountain, <a href="https://ijpam.uniud.it/online_issue/202451/10%20Ekanayake-LaFountain.pdf">Tight partitions for packing circles in a circle</a>, Italian Journal of Pure and Applied Mathematics, 51 (2024), 115-136. %H A384851 Michael Goldberg, <a href="https://www.jstor.org/stable/2688222">Packing of 14, 16, 17 and 20 Circles in a Circle</a>, Mathematics Magazine, Vol. 44, No. 3 (May, 1971), pp. 134-139 (provides D/d=4.3284 in Table 1, page 136). %e A384851 4.328428554860836681403909367478181... %o A384851 (PARI) 1+sqrt(1+polrootsreal(Pol([707281, -27270266, 472689975, -4930771548, 34449512067, -168736166642, 591369611109, -1498751280720, 2767422383674, -3746579404052, 3734397946902, -2743990597288, 1486108072662, -593729401364, 175537055738, -38557290064, 6295485573, -759438450, 66647843, -4134492, 172311, -4346, 49]))[10]) %Y A384851 Cf. A084618, A121570, A121598, A121601, A121602, A281115, A282279. %K A384851 nonn,cons %O A384851 1,1 %A A384851 _Jinyuan Wang_, Jun 10 2025