45710domain: NAppears in sequencesNumbers with no 1's in their base-3, base-4, and base-5 expansions. Intersection of A005823, A023709, and A023725.at n=19A117482a(n) = (2*n^3 + 5*n^2 - 13*n)/2.at n=34A162262Number of (w,x,y) with all terms in {0,...,n} and |w-x|+|x-y|+|y-w| != w+x+y.at n=35A213485