%I A037980
%S A037980 0,1,4,109,800,19501,168952,3979830,37566720,862687045,
%T A037980 8615396504,193710517650,2015475061184,44516469004294,478043160040240,
%U A037980 10399216983867484,114539008771344384,2459029841101222485
%N A037980 ( binomial(4*n,2*n)/4-(-1)^n*binomial(2*n,n)/4+(1-(-1)^n)*binomial(2*n,
               n)^2/4 )/4.
%D A037980 The right-hand side of a binomial coefficient identity in H. W. Gould, 
               Combinatorial Identities, Morgantown, 1972.
%Y A037980 Sequence in context: A002109 A076265 A114876 this_sequence A015100 A061454 
               A135917
%Y A037980 Adjacent sequences: A037977 A037978 A037979 this_sequence A037981 A037982 
               A037983
%K A037980 nonn
%O A037980 0,3
%A A037980 N. J. A. Sloane (njas(AT)research.att.com).