32681domain: NAppears in sequencesn*(1+3*n+6*n^2)/2.at n=22A115519a(n) = A175369(n^2).at n=22A175370Number of nX1 1..5 arrays with every element value z a city block distance of exactly z from another element value z.at n=15A209020a(1) = 1; a(n+1) = Sum_{d|n, n/d odd} a(d)^(n/d).at n=45A307780