16777204domain: NAppears in sequencesa(n) = 4^n - n.at n=12A024037a(n) = 3*a(n-1) - a(n-2) - 3*a(n-3) + 2*a(n-4).at n=24A084174Number of bits required to represent binomial(2^n, 2^(n-1)).at n=24A112884Expansion of g.f. 8/(1-2*z)-12/(1-z)+z+5.at n=21A173034