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 A212006 #15 Oct 01 2022 01:00:42
%S A212006 6,1,5,2,8,9,0,8,3,8,8,8,1,9,4,8,3,9,6,9,9,3,4,0,4,4,3,9,3,7,5,4,8,7,
%T A212006 3,5,2,7,5,0,1,9,2,1,7,9,7,1,8,6,9,8,3,4,2,0,2,2,8,8,7,5,9,9,8,9,8,2,
%U A212006 0,1,0,4,2,1,9,1,0,4,1,3,6,6,3,9,5,0,1,7,0,1
%N A212006 Decimal expansion of (2*Pi)^6.
%H A212006 Juan M. Maldacena, <a href="http://arxiv.org/abs/hep-th/9711200">The Large N Limit of Superconformal Field Theories and Supergravity</a>, arXiv:hep-th/9711200v3, 1997-1998, p. 13, 15.
%H A212006 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A212006 Equals Product_{k=1..21, gcd(k,21)==1} Gamma(k/21). - _Amiram Eldar_, Jun 12 2021
%e A212006 61528.908388819483969934...
%t A212006 RealDigits[(2*Pi)^6, 10, 100][[1]] (* _Amiram Eldar_, Jun 12 2021 *)
%o A212006 (PARI) 64*Pi^6 \\ _Charles R Greathouse IV_, Oct 01 2022
%Y A212006 Cf. A000796, A019692, A092732, A212002-A212005.
%K A212006 nonn,cons
%O A212006 5,1
%A A212006 _Omar E. Pol_, Aug 11 2012