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 A134719 #13 Aug 31 2025 18:38:16
%S A134719 1,1,1,1,1,3,5,7,9,21,37,49,65,151,265,351,465,1081,1897,2513,3329,
%T A134719 7739,13581,17991,23833,55405,97229,128801,170625,396655,696081,
%U A134719 922111,1221537,2839729,4983377,6601569,8745217,20330163,35676949,47261895,62608681
%N A134719 Odd Padovan numbers.
%F A134719 G.f.: x*(x+1)*(x^10-2*x^9+3*x^8-4*x^7+4*x^6-2*x^5+6*x^4-x^2-1) / (x^12+x^8+7*x^4-1). - _Colin Barker_, Sep 17 2013
%t A134719 Select[CoefficientList[Series[(1 - x^2)/(1 - x^2 - x^3), {x, 0, 100}], x], OddQ] (* _T. D. Noe_, Jul 31 2011 *)
%Y A134719 Cf. A000931.
%Y A134719 Cf. A047328 (Indices of the odd numbers in the Padovan sequence). - _Francesco Daddi_, Jul 31 2011
%K A134719 easy,nonn,changed
%O A134719 1,6
%A A134719 _Omar E. Pol_, Nov 11 2007