228192domain: NAppears in sequencesa(n) = (3*a(n-1)) XOR a(n-2).at n=12A210680Number of length 2+2 0..n arrays with the sum of the maximum minus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=30A252178Numbers k such that Bernoulli number B_{k} has denominator 4501770.at n=22A295597