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 A017317 #30 Apr 06 2025 14:57:33 %S A017317 4,14,24,34,44,54,64,74,84,94,104,114,124,134,144,154,164,174,184,194, %T A017317 204,214,224,234,244,254,264,274,284,294,304,314,324,334,344,354,364, %U A017317 374,384,394,404,414,424,434,444,454,464,474,484,494,504,514,524,534 %N A017317 a(n) = 10*n + 4. %C A017317 Apart from initial term(s), dimension of the space of weight 2n cusp forms for Gamma_0(59). %H A017317 Vincenzo Librandi, <a href="/A017317/b017317.txt">Table of n, a(n) for n = 0..5000</a> %H A017317 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A017317 William A. Stein, <a href="http://wstein.org/Tables/dimskg0n.gp">Dimensions of the spaces S_k(Gamma_0(N))</a>. %H A017317 William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>. %H A017317 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A017317 a(n) = 10*n + 4; a(n) = 2*a(n-1) - a(n-2). - _Vincenzo Librandi_, May 29 2011 %F A017317 G.f.: 2*(2+3*x)/(x-1)^2. - _R. J. Mathar_, Mar 20 2018 %F A017317 From _Elmo R. Oliveira_, Apr 05 2025: (Start) %F A017317 E.g.f.: 2*exp(x)*(2 + 5*x). %F A017317 a(n) = 2*A016873(n) = A016897(2*n). (End) %t A017317 Range[4, 1000, 10] (* _Vladimir Joseph Stephan Orlovsky_, May 28 2011 *) %o A017317 (Magma) [10*n+4: n in [0..60]]; // _Vincenzo Librandi_, May 29 2011 %o A017317 (PARI) a(n)=10*n+4 \\ _Charles R Greathouse IV_, Jul 10 2016 %Y A017317 Cf. A008592, A016873, A016897, A017305. %K A017317 nonn,easy %O A017317 0,1 %A A017317 _N. J. A. Sloane_