11716252domain: NAppears in sequencesNumber of multiples of 3 in 0..2^n-1 with an even sum of base-2 digits.at n=26A036557Expansion of g.f.: (1-2*x)*(1-4*x+x^2)/((1-x)*(1-3*x)*(1-4*x)).at n=13A087433Expansion of (1-x)^4/((1-x)^6 - x^6).at n=25A119336