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 A176710 #22 Jan 29 2024 06:14:39
%S A176710 1,2,12,24,144,288,1728,3456,20736,41472,248832,497664,2985984,
%T A176710 5971968,35831808,71663616,429981696,859963392,5159780352,10319560704,
%U A176710 61917364224,123834728448,743008370688,1486016741376,8916100448256,17832200896512,106993205379072,213986410758144
%N A176710 Mix A001021, 2*A001021.
%C A176710 Divides A091137. See A165313.
%H A176710 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,12).
%H A176710 <a href="/index/Di#divseq">Index to divisibility sequences</a>
%F A176710 a(n)= +12*a(n-2). G.f.: ( -1-2*x ) / ( -1+12*x^2 ). [_R. J. Mathar_, Apr 26 2010]
%t A176710 LinearRecurrence[{0, 12}, {1, 2}, 30] (* _Paolo Xausa_, Jan 29 2024 *)
%K A176710 nonn,easy
%O A176710 0,2
%A A176710 _Paul Curtz_, Apr 24 2010
%E A176710 a(21)-a(27) from _Paolo Xausa_, Jan 29 2024