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 A126823 #9 Jan 05 2025 01:07:20 %S A126823 1,8168,252,6720,4830,2144,7832,2560,1045,6960,2132,5888,3894,448, %T A126823 4744,4096,8114,7688,3628,896,7584,6176,6472,6144,2471,4848,6552,5632, %U A126823 5222,832,3424,0,4784,1872,6096,1856,1342,3040,6440,3072,2938,6400,3764,7424,1078 %N A126823 Ramanujan numbers (A000594) read mod 8192. %D A126823 Oddmund Kolberg, Congruences for Ramanujan's Function ̈tau(n), Univ. Bergen Årbok Naturvit Rekke, No. 11, 1962. %H A126823 Amiram Eldar, <a href="/A126823/b126823.txt">Table of n, a(n) for n = 1..10000</a> %H A126823 H. P. F. Swinnerton-Dyer, <a href="http://dx.doi.org/10.1007/978-3-540-37802-0_1">On l-adic representations and congruences for coefficients of modular forms</a>, pp. 1-55 of Modular Functions of One Variable III (Antwerp 1972), Lect. Notes Math., 350, 1973. %F A126823 a(n) == 1217 * sigma_11(n) (mod 8192) for n == 3 (mod 8) (Kolberg, 1962). - _Amiram Eldar_, Jan 05 2025 %t A126823 a[n_] := Mod[RamanujanTau[n], 8192]; Array[a, 100] (* _Amiram Eldar_, Jan 05 2025 *) %o A126823 (PARI) a(n) = ramanujantau(n) % 8192; \\ _Amiram Eldar_, Jan 05 2025 %Y A126823 Cf. A000594, A013959. %K A126823 nonn %O A126823 1,2 %A A126823 _N. J. A. Sloane_, Feb 25 2007