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 A074527 #22 May 26 2024 02:47:40
%S A074527 3,10,38,160,722,3400,16418,80440,397442,1973320,9825698,49007320,
%T A074527 244676162,1222305640,6108314978,30531959800,152631002882,
%U A074527 763068724360,3815084948258,19074649113880,95370919473602,476847620653480
%N A074527 a(n) = 2^n + 3^n + 5^n.
%H A074527 Vincenzo Librandi, <a href="/A074527/b074527.txt">Table of n, a(n) for n = 0..200</a>
%H A074527 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (10,-31,30).
%F A074527 From _Mohammad K. Azarian_, Dec 26 2008: (Start)
%F A074527 G.f.: 1/(1-2*x) + 1/(1-3*x) + 1/(1-5*x).
%F A074527 E.g.f.: exp(2*x) + exp(3*x) + exp(5*x). (End)
%F A074527 a(n) = 10*a(n-1) - 31*a(n-2) + 30*a(n-3). - _Wesley Ivan Hurt_, May 26 2024
%t A074527 Table[2^n + 3^n + 5^n, {n, 0, 21}]
%t A074527 LinearRecurrence[{10,-31,30},{3,10,38},30] (* _Harvey P. Dale_, Feb 05 2022 *)
%o A074527 (Magma) [2^n + 3^n + 5^n: n in [0..25]]; // _Vincenzo Librandi_, Jun 11 2011
%o A074527 (PARI) a(n)=2^n+3^n+5^n \\ _Charles R Greathouse IV_, Oct 07 2015
%Y A074527 Cf. A001550, A001576, A034513, A001579, A074501-A074580.
%K A074527 easy,nonn
%O A074527 0,1
%A A074527 _Robert G. Wilson v_, Aug 23 2002