176127144domain: NAppears in sequencesa(0) = 1, a(1) = 6, a(2) = 24; for n>=3, a(n) = 4a(n-1) - a(n-2).at n=14A001352Numerators of continued fraction convergents to sqrt(588).at n=6A042126Exponents of x in the numerator of cluster variables of a rank 2 cluster algebra.at n=28A272073