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 A003245 #17 Oct 21 2023 17:20:43
%S A003245 0,-24,240,-504,480,-264,95,-24,5,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T A003245 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%U A003245 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N A003245 Nearest integer to -4n/Bernoulli(2n).
%D A003245 Douglas C. Ravenel, Complex cobordism theory for number theorists, Lecture Notes in Mathematics, 1326, Springer-Verlag, Berlin-New York, 1988, pp. 123-133.
%D A003245 F. Hirzebruch et al., Manifolds and Modular Forms, Vieweg, 2nd ed. 1994, p. 130.
%H A003245 <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers</a>.
%H A003245 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1).
%t A003245 Table[Round[(-4n)/BernoulliB[2n]], {n, 0, 75}] (* _Alonso del Arte_, Jul 19 2012 *)
%Y A003245 Cf. A000367/A002445.
%K A003245 sign
%O A003245 0,2
%A A003245 _N. J. A. Sloane_