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 A228719 #24 May 30 2025 10:04:42 %S A228719 1,8,8,4,9,5,5,5,9,2,1,5,3,8,7,5,9,4,3,0,7,7,5,8,6,0,2,9,9,6,7,7,0,1, %T A228719 7,3,0,5,1,8,3,0,1,6,3,9,6,2,5,0,6,3,4,9,2,5,8,4,9,6,6,7,5,5,3,8,4,6, %U A228719 8,9,8,4,3,7,7,1,7,2,5,3,9,9,1,7,6,8,2,0,8,9,5,2,0,5,2,7,0,2,4,0,7,8,9 %N A228719 Decimal expansion of 3*Pi/5. %C A228719 With offset 2, decimal expansion of 6*Pi. %C A228719 6*Pi is also the surface area of a sphere whose diameter equals the square root of 6. More generally x*Pi is also the surface area of a sphere whose diameter equals the square root of x. - _Omar E. Pol_, Dec 22 2013 %C A228719 The interior angle of a regular pentagon expressed in radians. - _Stefano Spezia_, May 30 2025 %H A228719 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A228719 Equals 1/(10*A374172). - _Hugo Pfoertner_, Jul 16 2024 %e A228719 3*Pi/5 = 1.8849555921538759430775860299677017305183... %e A228719 6*Pi = 18.849555921538759430775860299677017305183... %t A228719 First[RealDigits[6*Pi, 10, 100]] (* _Paolo Xausa_, Jul 16 2024 *) %o A228719 (PARI) .6*Pi \\ _Charles R Greathouse IV_, Sep 30 2022 %Y A228719 Cf. A000796, A019692, A122952, A019694, A019669 (Pi through 5*Pi). %Y A228719 Cf. A374172. %K A228719 nonn,cons %O A228719 1,2 %A A228719 _Omar E. Pol_, Oct 03 2013