6690448domain: NAppears in sequencesa(n) = 2^n - C(n,0)- ... - C(n,9).at n=23A035042a(n) = Sum_{k=0..13} binomial(n, k).at n=23A219676a(n) = number of subsets of {1,2,...,n} that contain more nonprimes than primes.at n=23A369853Expansion of 1/(g * (2-g))^2, where g = 1+x*g^2 is the g.f. of A000108.at n=13A391222