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 A180356 #13 Jul 07 2025 19:51:45
%S A180356 0,7,76,747,4120,15655,46692,117691,262192,531495,1000060,1771627,
%T A180356 2986056,4826887,7529620,11390715,16777312,24137671,34012332,47045995,
%U A180356 64000120,85766247,113380036,148036027,191103120,244140775,308915932
%N A180356 a(n) = n^6 + 6n.
%H A180356 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (7,-21,35,-35,21,-7,1). [From _R. J. Mathar_, Sep 24 2010]
%F A180356 a(n) = +7*a(n-1) -21*a(n-2) +35*a(n-3) -35*a(n-4) +21*a(n-5) -7*a(n-6) +a(n-7). G.f.: x*(-7-27*x-362*x^2-242*x^3-87*x^4+5*x^5)/(x-1)^7. - _R. J. Mathar_, Sep 24 2010
%t A180356 Table[n^6+6n,{n,0,30}] (* or *) LinearRecurrence[{7,-21,35,-35,21,-7,1},{0,7,76,747,4120,15655,46692},30] (* _Harvey P. Dale_, Feb 14 2023 *)
%o A180356 (Magma) [n^6+6*n : n in [0..50]]; // _Wesley Ivan Hurt_, Jul 07 2025
%Y A180356 Cf. A079908, A132411, A180354, A180355.
%K A180356 easy,nonn
%O A180356 0,2
%A A180356 _Odimar Fabeny_, Aug 30 2010
%E A180356 First term corrected by _Odimar Fabeny_, Sep 23 2010
%E A180356 a(0) corrected by _R. J. Mathar_, Sep 24 2010