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 A017505 #23 Nov 18 2022 14:45:07
%S A017505 387420489,512000000000,26439622160671,406671383849472,
%T A017505 3299763591802133,18014398509481984,75084686279296875,
%U A017505 257327417311663616,760231058654565217,1999004627104432128,4785448563124474679
%N A017505 a(n) = (11*n + 9)^9.
%H A017505 G. C. Greubel, <a href="/A017505/b017505.txt">Table of n, a(n) for n = 0..1000</a>
%H A017505 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (10,-45,120,-210,252,-210,120,-45,10,-1).
%F A017505 From _G. C. Greubel_, Oct 28 2019: (Start)
%F A017505 G.f.: (387420489 + 508125795110*x + 21337056082676*x^2 + 165268671784082*x^3 + 361474108840298*x^4 + 251642575443146*x^5 + 52874765679980*x^6 + 2535762569534*x^7 + 10604494253*x^8 + 512*x^9)/(1-x)^10.
%F A017505 E.g.f.: (387420489 + 511612579511*x + 12708004790580*x^2 + 54814688324495* x^3 + 76236174032865*x^4 + 44337148166157*x^5 + 12159505753164*x^6 + 1632362365986*x^7 + 102249186237*x^8 + 2357947691*x^9)*exp(x). (End)
%p A017505 seq((11*n+9)^9, n=0..20); # _G. C. Greubel_, Oct 28 2019
%t A017505 (11*Range[20] -2)^9 (* _G. C. Greubel_, Oct 28 2019 *)
%t A017505 LinearRecurrence[{10,-45,120,-210,252,-210,120,-45,10,-1},{387420489,512000000000,26439622160671,406671383849472,3299763591802133,18014398509481984,75084686279296875,257327417311663616,760231058654565217,1999004627104432128},20] (* _Harvey P. Dale_, Nov 18 2022 *)
%o A017505 (Maxima) makelist((11*n+9)^9, n, 0, 30); /* _Martin Ettl_, Oct 21 2012 */
%o A017505 (PARI) vector(21, n, (11*n-2)^9) \\ _G. C. Greubel_, Oct 28 2019
%o A017505 (Magma) [(11*n+9)^9: n in [0..20]]; // _G. C. Greubel_, Oct 28 2019
%o A017505 (Sage) [(11*n+9)^9 for n in (0..20)] # _G. C. Greubel_, Oct 28 2019
%o A017505 (GAP) List([0..20], n-> (11*n+9)^9); # _G. C. Greubel_, Oct 28 2019
%Y A017505 Powers of the form (11*n+9)^m: A017497 (m=1), A017498 (m=2), A017499 (m=3), A017500 (m=4), A017501 (m=5), A017502 (m=6), A017503 (m=7), A017504 (m=8), this sequence (m=9), A017506 (m=10), A017607 (m=11), A017508 (m=12).
%Y A017505 Subsequence of A001017.
%K A017505 nonn,easy
%O A017505 0,1
%A A017505 _N. J. A. Sloane_