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 A049625 #11 Dec 15 2017 18:05:00
%S A049625 2,2,4,6,8,9,12,13,15,17,19,20,23,24,26,28,30,31,34,35,37,39,41,42,45,
%T A049625 46,48,50,52,53,56,57,59,61,63,64,67,68,70,72,74,75,78,79,81,83,85,86,
%U A049625 89,90,92,94,96,97,100,101,103,105,107,108,111,112,114,116,118,119,122,123,125
%N A049625 Congruent to 1, 2, 4, 6, 8 or 9 mod 11, but with 2 instead of 1.
%C A049625 a(n) = T(n, 3), array T as in A049615.
%H A049625 G. C. Greubel, <a href="/A049625/b049625.txt">Table of n, a(n) for n = 0..1000</a>
%H A049625 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,1,0,-1).
%F A049625 G.f.: 2 -x*(-2-4*x-4*x^2-2*x^3+x^4)/( (1+x)*(1+x+x^2)*(x-1)^2 ). - _R. J. Mathar_, Oct 26 2015
%t A049625 CoefficientList[Series[2 - x*(-2 - 4*x - 4*x^2 - 2*x^3 + x^4)/((1 + x)*(1 + x + x^2)*(x - 1)^2), {x,0,30}], x] (* _G. C. Greubel_, Dec 15 2017 *)
%o A049625 (PARI) x='x+O('x^30); Vec(2 -x*(-2-4*x-4*x^2-2*x^3+x^4)/( (1+x)*(1+x+x^2)*(x-1)^2 )) \\ _G. C. Greubel_, Dec 15 2017
%K A049625 nonn,easy
%O A049625 0,1
%A A049625 _Clark Kimberling_
%E A049625 Terms a(38) onward added by _G. C. Greubel_, Dec 15 2017