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 A064075 #10 Feb 16 2025 08:32:45 %S A064075 14,3154,2529614,4300685074,12547916380814,55939426660067794, %T A064075 353673181169645937614,3010104609039993347591314, %U A064075 33182624286820245728657184014,459935657757561065580439067895634 %N A064075 Generalized tangent number d(10,n). %D A064075 D. Shanks. "Generalized Euler and Class Numbers." Math. Comput. 21, 689-694, 1967. Math. Comput. 22, 699, 1968. %H A064075 Lars Blomberg, <a href="/A064075/b064075.txt">Table of n, a(n) for n = 1..172</a> %H A064075 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TangentNumber.html">Tangent Number.</a> %K A064075 nonn,easy %O A064075 1,1 %A A064075 _Eric W. Weisstein_, Aug 31 2001 %E A064075 Changed offset to 1 by _Lars Blomberg_, Sep 07 2015