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 A203129 #24 May 02 2024 04:28:04
%S A203129 9,0,2,7,4,5,2,9,2,9,5,0,9,3,3,6,1,1,2,9,6,8,5,8,6,8,5,4,3,6,3,4,2,5,
%T A203129 2,3,6,7,9,5,5,1,5,1,0,7,0,4,5,2,9,1,3,2,2,6,2,6,8,1,6,4,5,3,0,9,1,8,
%U A203129 8,6,4,3,6,0,1,1,6,1,6,9,4,4,5,0,5,5,6,0,9,8,6,3,5,3,1,5,2,7,4
%N A203129 Decimal expansion of (2/3)! = Gamma(5/3).
%H A203129 <a href="/index/Ga#gamma_function">Index to sequences related to the Gamma function</a>.
%F A203129 Equals 2*A073006/3. - _R. J. Mathar_, Jan 15 2021
%F A203129 Equals Integral_{x=0..oo} exp(-x^(3/2)) dx. - _Ilya Gutkovskiy_, Apr 10 2024
%F A203129 Equals sqrt(Pi)*Gamma(7/3)/(2^(4/3)*Gamma(7/6)). - _Gerry Martens_, May 01 2024
%F A203129 Equals 4*Pi / (3^(3/2) * Gamma(1/3)). - _Vaclav Kotesovec_, May 02 2024
%e A203129 0.90274529295093361129685868543634252367955151070452913226268...
%t A203129 RealDigits[Gamma[5/3], 10, 120][[1]] (* _Amiram Eldar_, May 29 2023 *)
%o A203129 (PARI) gamma(5/3) \\ _Charles R Greathouse IV_, Mar 25 2014
%Y A203129 Cf. A073006.
%K A203129 nonn,cons
%O A203129 0,1
%A A203129 _N. J. A. Sloane_, Dec 29 2011