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 A373187 #11 May 27 2024 09:56:20 %S A373187 1,4,10,21,35,56,84,124,165,220,286,374,455,560,680,837,969,1140,1330, %T A373187 1575,1771,2024,2300,2656,2925,3276,3654,4144,4495,4960,5456,6108, %U A373187 6545,7140,7770,8601,9139,9880,10660,11700,12341,13244,14190,15466,16215,17296,18424 %N A373187 Expansion of Sum_{k>=0} x^(4^k) / (1 - x^(4^k))^4. %F A373187 G.f. A(x) satisfies A(x) = x/(1 - x)^4 + A(x^4). %F A373187 a(4*n+1) = A000292(4*n+1), a(4*n+2) = A000292(4*n+2), a(4*n+3) = A000292(4*n+3) and a(4*n+4) = A000292(4*n+4) + a(n+1) for n >= 0. %Y A373187 Cf. A129527, A373186. %Y A373187 Cf. A373188, A373189. %Y A373187 Cf. A000292. %K A373187 nonn %O A373187 1,2 %A A373187 _Seiichi Manyama_, May 27 2024