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 A373186 #11 May 27 2024 09:56:38
%S A373186 1,3,7,10,15,24,28,36,52,55,66,88,91,105,135,136,153,195,190,210,259,
%T A373186 253,276,336,325,351,430,406,435,520,496,528,627,595,630,754,703,741,
%U A373186 871,820,861,1008,946,990,1170,1081,1128,1312,1225,1275,1479,1378,1431,1680,1540
%N A373186 Expansion of Sum_{k>=0} x^(3^k) / (1 - x^(3^k))^3.
%F A373186 G.f. A(x) satisfies A(x) = x/(1 - x)^3 + A(x^3).
%F A373186 a(3*n+1) = A000217(3*n+1), a(3*n+2) = A000217(3*n+2) and a(3*n+3) = A000217(3*n+3) + a(n+1) for n >= 0.
%Y A373186 Cf. A129527, A373187.
%Y A373186 Cf. A327625, A338045.
%Y A373186 Cf. A000217.
%K A373186 nonn
%O A373186 1,2
%A A373186 _Seiichi Manyama_, May 27 2024