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 A017291 #17 Sep 08 2022 08:44:42 %S A017291 1,285311670611,350277500542221,25408476896404831,550329031716248441, %T A017291 6071163615208263051,43513917611435838661,231122292121701565271, %U A017291 984770902183611232881,3543686674874777831491,11156683466653165551101 %N A017291 a(n) = (10*n + 1)^11. %H A017291 Vincenzo Librandi, <a href="/A017291/b017291.txt">Table of n, a(n) for n = 0..1000</a> %H A017291 <a href="/index/Rec#order_12">Index entries for linear recurrences with constant coefficients</a>, signature (12, -66, 220, -495, 792, -924, 792, -495, 220, -66, 12, -1). %t A017291 (10Range[0,20]+1)^11 (* _Harvey P. Dale_, May 11 2011 *) %o A017291 (Magma) [(10*n+1)^11: n in [0..20]]; // _Vincenzo Librandi_, May 15 2011 %Y A017291 Cf. A008455 (n^11), A017281 (10n+1). %K A017291 nonn,easy %O A017291 0,2 %A A017291 _N. J. A. Sloane_