38334domain: NAppears in sequencesa(0) = 1, a(n) = 28*n^2 + 2 for n>0.at n=37A010018Number of different values of (x_n, x_1*x_2*...*x_n) where x_1=1 and x_i-x_{i-1} is 0 or 1.at n=18A334636