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 A126816 #10 Jan 06 2025 04:05:06 %S A126816 1,40,60,0,30,32,24,0,21,48,20,0,54,0,8,0,50,8,44,0,32,32,8,0,39,48, %T A126816 24,0,38,0,32,0,48,16,16,0,62,32,40,0,58,0,52,0,54,0,16,0,41,24,56,0, %U A126816 46,0,24,0,16,48,36,0,6,0,56,0,20,0,60,0,32,0,24,0,26,48,36,0,32,0,48,0,9,16 %N A126816 Ramanujan numbers (A000594) read mod 64. %H A126816 Amiram Eldar, <a href="/A126816/b126816.txt">Table of n, a(n) for n = 1..10000</a> %H A126816 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. %t A126816 a[n_] := Mod[RamanujanTau[n], 64]; Array[a, 100] (* _Amiram Eldar_, Jan 05 2025 *) %o A126816 (PARI) a(n) = ramanujantau(n) % 64; \\ _Amiram Eldar_, Jan 05 2025 %Y A126816 Cf. A000594. %K A126816 nonn %O A126816 1,2 %A A126816 _N. J. A. Sloane_, Feb 25 2007