97300domain: NAppears in sequencesa(n+1) = a(n) + (n^2 + 1)*a(n-1).at n=8A047990a(n) = (n^3+5*n+3)/3 + 2*floor(n/2) + a(n-2), with a(0)=1 and a(1)=3.at n=38A336529Nonunitary near-perfect numbers: k such that nusigma(k) = k + d where d is a nonunitary divisor of k.at n=30A362969