396916domain: NAppears in sequencesCeiling(n/3)-perfect numbers.at n=15A177084Number of (w,x,y,z) with all terms in {1,...,n} and 2|w-x|<n+|y-z|.at n=26A212687Numbers m with deficiency 32: sigma(m) - 2*m = -32.at n=5A387352