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 A017646 #21 Aug 25 2025 11:34:18 %S A017646 1000000,113379904,1544804416,9474296896,38068692544,117649000000, %T A017646 304006671424,689869781056,1418519112256,2699554153024,4826809000000, %U A017646 8198418170944,13339032325696,20924183895616 %N A017646 a(n) = (12*n+10)^6. %H A017646 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (7,-21,35,-35,21,-7,1). %F A017646 From _Harvey P. Dale_, Aug 27 2011: (Start) %F A017646 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). %F A017646 G.f.: -((64*(15625+1662186*x+12064767*x^2+15728812*x^3+4003287*x^4+ 117642*x^5+x^6))/(x-1)^7). (End) %e A017646 a(n) = A001014(A017641(n)). - _Michel Marcus_, Aug 25 2025 %t A017646 (12Range[0,30]+10)^6 (* _Harvey P. Dale_, Aug 27 2011 *) %Y A017646 Cf. A001014, A017641. %K A017646 nonn,easy,changed %O A017646 0,1 %A A017646 _N. J. A. Sloane_