207504domain: NAppears in sequencesNumber of 4 X 4 symmetric magic squares with line sum 2n.at n=23A093198Array read by antidiagonals: T(m,n) = m*(m+n-1)! + Sum( n <= i <= m+n-2 ) i!at n=32A211369a(n) = (1/2) * Sum_{|k|<=2*sqrt(p)} k^4*H(4*p-k^2) where H() is the Hurwitz class number and p is n-th prime.at n=14A297491