47406domain: NAppears in sequencesG.f.: q-cosh(x,q)^2 - q-sinh(x,q)^2 at q=-x.at n=23A198200Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p that are < p/2.at n=40A282724Number of finite sequences of distinct sets with total sum n.at n=18A358913