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 A041156 #17 Jul 09 2025 00:21:14 %S A041156 9,19,28,47,75,197,3621,7439,11060,18499,29559,77617,1426665,2930947, %T A041156 4357612,7288559,11646171,30580901,562102389,1154785679,1716888068, %U A041156 2871673747,4588561815,12048797377,221466914601 %N A041156 Numerators of continued fraction convergents to sqrt(88). %H A041156 Vincenzo Librandi, <a href="/A041156/b041156.txt">Table of n, a(n) for n = 0..200</a> %H A041156 <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,0,394,0,0,0,0,0,-1). %F A041156 a(n) = 394*a(n-6)-a(n-12). G.f.: -(x^11-9*x^10+19*x^9-28*x^8+47*x^7-75*x^6-197*x^5-75*x^4-47*x^3-28*x^2-19*x-9)/(x^12-394*x^6+1). [_Colin Barker_, Jul 18 2012] %t A041156 Numerator[Convergents[Sqrt[88], 30]] (* _Vincenzo Librandi_, Oct 26 2013 *) %Y A041156 Cf. A010539, A041157. %K A041156 nonn,cofr,frac,easy %O A041156 0,1 %A A041156 _N. J. A. Sloane_