127842domain: NAppears in sequencesNumber of base 6 n-digit numbers with adjacent digits differing by two or less.at n=8A126393a(n) = 100*n^2 - 49*n + 6.at n=35A157651Triangular array read by rows. T(n,k) is the number of functions on n unlabeled nodes that have exactly k unique components (n >= 1, k >= 1).at n=42A217859