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%I #21 Oct 21 2023 23:38:07
%S 0,-24,240,-504,480,-264,94,-24,4,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,
%T -1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,
%U 0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1
%N a(n) = floor((-4n)/Bernoulli(2n)).
%D Douglas C. Ravenel, Complex cobordism theory for number theorists, Lecture Notes in Mathematics, 1326, Springer-Verlag, Berlin-New York, 1988, pp. 123-133.
%D F. Hirzebruch et al., Manifolds and Modular Forms, Vieweg, 2nd ed. 1994, p. 130.
%H <a href="/index/Be#Bernoulli">Index entries for sequences related to Bernoulli numbers</a>.
%t Table[Floor[(-4n)/BernoulliB[2n]], {n, 0, 75}] (* _Alonso del Arte_, Jul 19 2012 *)
%K sign
%O 0,2
%A _N. J. A. Sloane_
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