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 A342209 #17 Mar 08 2021 06:22:55 %S A342209 2,9,2,4,8,3,3,5,4,5,2,3,7,6,9,4,8,9,9,2,7,3,3,5,9,2,2,7,6,6,1,3,5,9, %T A342209 4,8,2,7,8,0,3,3,8,5,3,7,6,0,2,7,4,6,8,2,2,5,4,8,2,5,9,4,8,4,9,2,8,3, %U A342209 2,2,9,4,5,0,4,0,1,5,8,1,6,5,8,8,5,0,3,6,9,3,5,7,8,9,5,7,6,2,9,3,9,7,4,5,0,4,0,4 %N A342209 Decimal expansion of logarithmic mean of Pi and e. %C A342209 The logarithmic mean of Pi and e lies between the arithmetic and geometric means of Pi and e. %H A342209 B. C. Carlson, <a href="https://www.jstor.org/stable/2317088">The logarithmic mean</a>, The American Mathematical Monthly, 79(6) 1972, pp. 615-618. %H A342209 Wikipedia, <a href="https://en.wikipedia.org/wiki/Logarithmic_mean">Logarithmic mean</a>. %F A342209 Equals (Pi-e)/(log(Pi)-1). %e A342209 2.9248335452376948992733592... %t A342209 RealDigits[(Pi - E)/(Log[Pi] - 1), 10, 100][[1]] (* _Amiram Eldar_, Mar 06 2021 *) %o A342209 (PARI) (Pi-exp(1))/(log(Pi)-1) %Y A342209 Cf. A000796 (Pi), A001113 (e), A019645, A074916, A074948, A074950, A074957. %K A342209 nonn,cons %O A342209 1,1 %A A342209 _Gleb Koloskov_, Mar 05 2021