204994domain: NAppears in sequencesNumber of n-tuples of numbers [0..5] (leading zeros allowed) in which adjacent digits differ by 4 or less.at n=7A126501T(n,k)=Number of 0..k arrays of length n+1 with 0 never adjacent to k.at n=50A212835Number of 0..n arrays of length 7 with 0 never adjacent to n.at n=4A212840