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 A385496 #17 Jul 06 2025 17:33:18
%S A385496 1,7,5,6,3,9,3,6,4,6,4,9,9,3,5,9,2,6,5,7,5,6,7,4,6,0,6,0,9,2,9,1,8,2,
%T A385496 1,4,1,7,3,1,1,1,9,4,9,6,4,4,9,2,5,9,9,4,2,1,2,4,6,0,3,4,4,1,7,9,6,6,
%U A385496 9,4,8,9,4,0,2,8,9,2,1,9,5,6,8,3,6,1,1,7,3,9,9,7,1,8,1,6,6,7,8,4,9,8,5,6,6
%N A385496 Decimal expansion of 1 - exp(1/2)/2.
%H A385496 Michael I. Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">A catalog of the real numbers</a>, (2007), p. 218.
%F A385496 Equals 1 - A019775.
%F A385496 Equals Sum_{n>=1} 1/n! * Sum_{k>=2} log(k)^n/(k!*2^k).
%e A385496 0.17563936464993592657567460609291821417311194964492...
%t A385496 RealDigits[1 - Exp[1/2]/2, 10, 105][[1]]
%Y A385496 Cf. A019775.
%K A385496 nonn,cons
%O A385496 0,2
%A A385496 _Artur Jasinski_, Jun 30 2025