1307137domain: NAppears in sequencesNumber of base 5 circular n-digit numbers with adjacent digits differing by 1 or less.at n=14A1246981/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 25.at n=16A159225a(n) = (1+sqrt(3))^n + (-2)^n + (1-sqrt(3))^n + 1.at n=14A215502