%I #3 Mar 30 2012 18:59:18
%S 1,6,66,860,11970,172116,2523444,37487736,562303170,8496977060,
%T 129153866556,1972531074696,30245473774516,465314970745800,
%U 7179145222818600,111037445957810160,1721080411744977090
%N a(n)=J(2n+1)*C(2n,n), J(n)=A001045(n).
%C Central coefficients of number triangle A124860.
%K easy,nonn
%O 0,2
%A _Paul Barry_, Nov 10 2006