5662052980domain: NAppears in sequencesNumber of numbers == 0 (mod 3) in range 2^n to 2^(n+1) with odd number of 1's in binary expansion.at n=34A000773Expansion of 1/((1-x)*(1-3*x)*(1-4*x)).at n=15A016208Expansion of x^2*(1-x)^3/((1-2*x)*(1-x+x^2)*(1-3*x+3x^2)).at n=35A227430