2139136domain: NAppears in sequencesNumbers with deficiency of 42.at n=6A175730Number of Eulerian paths in a lattice graph bounded by the four equations x+y=1, x+y=2n, x-y=2, and x-y=-2.at n=5A252863Numbers equal to the sum of their aliquot parts, each of them increased by 2.at n=5A304276