49299domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(986).at n=5A042908a(n) = (8^n - 7^n - 6^n - 5^n + 4*4^n)/2.at n=6A081681a(n) = 1250*n^2 - 1800*n + 649.at n=7A154358Numbers of the form x^2 + y^2 + z^2 = phi(x*y*z) + sigma(x*y*z).at n=38A173792