47018498457domain: NAppears in sequencesExpansion of 3*(1+2*x-2*x^2)/((1-x)*(1-6*x^2)).at n=26A026551a(n) = 3*(6^n - 1)/5.at n=13A125682a(n) = floor(A026532(n)/5).at n=29A329114