57176domain: NAppears in sequencesTheta series of lattice Kappa_7.at n=28A015236Coefficients of mock modular form H_2^(4) (divided by 16).at n=23A256209Indices of primes in A000712.at n=31A285217a(n) = 4^n * [x^n] Product_{k>=1} (1 + 2*x^k)^(1/4).at n=7A370736Euler transform of A016116 = 2^floor(n/2).at n=21A392561