%I A003457
%S A003457 0,1,0,1,0,1,0,1,1,14,140,1804,27413,487469,10026347,236192434,
%T A003457 6317862397,190439655627,6425425249652,241207241774251,
%U A003457 10020155328258126,458387180159766539,22989944171828251745
%V A003457 0,1,0,1,0,1,0,1,-1,14,-140,1804,-27413,487469,-10026347,236192434,
%W A003457 -6317862397,190439655627,-6425425249652,241207241774251,
%X A003457 -10020155328258126,458387180159766539,-22989944171828251745
%N A003457 Ceiling of B_{2n}/(-4n).
%D A003457 Douglas C. Ravenel, Complex cobordism theory for number theorists, Lecture 
               Notes in Mathematics, 1326, Springer-Verlag, Berlin-New York, 1988, 
               pp. 123-133.
%D A003457 F. Hirzebruch et al., Manifolds and Modular Forms, Vieweg, 2nd ed. 1994, 
               p. 130.
%H A003457 <a href="Sindx_Be.html#Bernoulli">Index entries for sequences related 
               to Bernoulli numbers.</a>
%Y A003457 Sequence in context: A121034 A125402 A016290 this_sequence A016241 A131583 
               A011547
%Y A003457 Adjacent sequences: A003454 A003455 A003456 this_sequence A003458 A003459 
               A003460
%K A003457 sign
%O A003457 1,10
%A A003457 N. J. A. Sloane (njas(AT)research.att.com).