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 A321218 #14 Nov 14 2018 08:42:13
%S A321218 1,3,3,3,2,2,3,6,8,4,2,1,0,5,2,6,3,1,5,7,8,9,4,7,3,6,8,4,2,1,0,5,2,6,
%T A321218 3,1,5,7,8,9,4,7,3,6,8,4,2,1,0,5,2,6,3,1,5,7,8,9,4,7,3,6,8,4,2,1,0,5,
%U A321218 2,6,3,1,5,7,8,9,4,7,3,6,8,4,2,1,0,5,2,6,3,1,5,7,8
%N A321218 Decimal expansion of number of Pascals (Pa) in 1 Torr.
%C A321218 1 Torr is defined to be exactly 1/760 of standard atmospheric pressure (101325 Pa), which is about 133.322368421052... Pa. Note that 1 Torr is slightly different from 1 mmHg (millimeter of mercury), which is defined to be exactly 133.322387415 Pa, or 13.5951 mmH2O (millimeters of water), with relative difference less than 0.000015%.
%C A321218 Period 18 from a(9) on.
%H A321218 Wikipedia, <a href="https://en.wikipedia.org/wiki/Torr">Torr</a>
%H A321218 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,0,0,0,0,0,0,-1,1).
%F A321218 a(n) = A021023(n+3) for n >= 9.
%F A321218 G.f.: -x^3*(5*x^15 - 3*x^14 + 4*x^13 - x^12 - x^11 - 3*x^9 + 2*x^8 + 3*x^7 + x^6 - x^4 + 2*x + 1)/((x - 1)*(x + 1)*(x^2 - x + 1)*(x^6 - x^3 + 1))
%e A321218 1 Torr = 1/760 atm = 101325/760 Pa = 20265/152 Pa.
%o A321218 (PARI) default(realprecision, 100); 20265.0/152.0
%o A321218 (PARI) x='x+O('x^50); Vec(-x^3*(5*x^15-3*x^14+4*x^13-x^12-x^11-3*x^9+2*x^8+3*x^7+x^6-x^4+2*x+1)/((x-1)*(x+1)*(x^2-x+1)*(x^6-x^3+1)))
%Y A321218 Cf. A021023. A213611.
%K A321218 nonn,cons
%O A321218 3,2
%A A321218 _Jianing Song_, Oct 31 2018