Search: id:A003955
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%I A003955
%S A003955 4,54,1800,110250,10716300,1512784350,292183491600,73958946311250,
%T A003955 23749039426612500,9430743556307823750,4537044990907363935000
%N A003955 (1*3*5*...*(2n+1))^2*(2n+4).
%Y A003955 Equals (2n+4) * A001818(n+1).
%Y A003955 Sequence in context: A093983 A138459 A111161 this_sequence A094154 A125531 
               A095209
%Y A003955 Adjacent sequences: A003952 A003953 A003954 this_sequence A003956 A003957 
               A003958
%K A003955 nonn
%O A003955 0,1
%A A003955 N. J. A. Sloane (njas(AT)research.att.com), Joe Keane (jgk(AT)jgk.org)

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