449550domain: NAppears in sequencesWeight distribution of [50,28,8] code associated with Hoffman-Singleton and Higman-Sims graphs.at n=7A015067Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.at n=8A264624