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 A021564 #21 Aug 20 2025 16:25:31 %S A021564 0,0,1,7,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2, %T A021564 8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1, %U A021564 4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4,2,8,5,7,1,4 %N A021564 Decimal expansion of 1/560. %C A021564 A021060 shifted right. - _R. J. Mathar_, Apr 19 2025 %H A021564 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (1, 0, -1, 1). %e A021564 0.001785714285714285714285714285714285714285714285714... %t A021564 First[RealDigits[1/560, 10, 100, -1]] (* _Paolo Xausa_, Aug 20 2025 *) %Y A021564 Cf. A020806. %K A021564 nonn,cons,easy %O A021564 0,4 %A A021564 _N. J. A. Sloane_