182349domain: NAppears in sequencesNumber of base 7 n-digit numbers with adjacent digits differing by three or less.at n=7A126475T(n,k)=Number of -k..k arrays of n elements with adjacent element differences also in -k..k.at n=42A201042Number of -n..n arrays of 7 elements with adjacent element differences also in -n..n.at n=2A201046