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 A164107 #11 Feb 16 2025 08:33:11 %S A164107 3,3,0,7,3,3,6,1,7,9,2,3,1,9,8,0,8,1,8,7,1,7,4,7,3,6,0,7,1,5,7,4,8,2, %T A164107 1,5,4,9,0,4,0,3,0,7,8,0,3,6,1,0,7,8,1,5,4,0,4,2,0,8,4,0,6,4,4,0,6,0, %U A164107 1,5,4,5,7,8,6,3,0,0,8,6,4,4,0,0,7,1,1,4,7,7,6,8,1,0,9,7,4,5,2,7,2,5,6,5,4 %N A164107 Decimal expansion of 16*Pi^3/15. %C A164107 Surface area of the 7-dimensional unit sphere. %H A164107 G. C. Greubel, <a href="/A164107/b164107.txt">Table of n, a(n) for n = 2..5000</a> %H A164107 Eric Weisstein, <a href="https://mathworld.wolfram.com/Hypersphere.html">Hypersphere</a>, Wolfram Mathworld. %H A164107 Wikipedia, <a href="http://en.wikipedia.org/wiki/Hypersphere">Hypersphere</a> %H A164107 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A164107 Equals 33.07336179231980818717473607157482154904030780... %t A164107 RealDigits[16*Pi^3/15, 10, 50][[1]] (* _G. C. Greubel_, Sep 11 2017 *) %o A164107 (PARI) 16*Pi^3/15 \\ _G. C. Greubel_, Sep 11 2017 %Y A164107 Equals 7*A164106. %Y A164107 Cf. A019692, A019694, A164102, A164104, A091925, A164109. %K A164107 cons,nonn %O A164107 2,1 %A A164107 _R. J. Mathar_, Aug 10 2009