502211745domain: NAppears in sequences3rd binomial transform of (1,2,0,0,0,0,0,0,...).at n=16A081038Denominator of I(n)=integral_{x=0 to 1/n}(x^2-1)^3 dx.at n=8A094075a(n) = (1/2)*n*(n-1)*3^(n-1).at n=15A129530