32310domain: NAppears in sequencesNumbers n such that pi(2n) divides n.at n=23A235495Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic residues mod p that are < p/2.at n=30A282039Expansion of (1 / theta_4(x) - 1)^5 / 32.at n=7A341366