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 A017607 #11 Sep 05 2025 14:41:59 %S A017607 343,6859,29791,79507,166375,300763,493039,753571,1092727,1520875, %T A017607 2048383,2685619,3442951,4330747,5359375,6539203,7880599,9393931, %U A017607 11089567,12977875,15069223,17373979,19902511 %N A017607 a(n) = (12n+7)^3. %H A017607 Matthew House, <a href="/A017607/b017607.txt">Table of n, a(n) for n = 0..10000</a> %H A017607 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-6,4,-1). %F A017607 G.f.: (343+5487*x+4413*x^2+125*x^3)/(1-x)^4. %F A017607 a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4). - _Wesley Ivan Hurt_, Sep 05 2025 %t A017607 (12 Range[0, 40] + 7)^3 (* _Wesley Ivan Hurt_, Sep 05 2025 *) %K A017607 nonn,easy,changed %O A017607 0,1 %A A017607 _N. J. A. Sloane_