https://www.spaceacademy.net.au/library/notes/bode.htm

TITIUS-BODE FORMULA

Planet Actual Formula

Mercury 0.387 (0.4)
Venus 0.723 (0.7)
Earth 1.00 (1.0)
Mars 1.52 (1.6)
??? (2.8)
Jupiter 5.20 (5.2)
Saturn 9.55 (10.0)
Uranus 19.2 (19.6)
Neptune 30.1 (38.8)

Planet / Distance / Formula

Mercury 58 60
Venus 108 105
Earth 150 150
Mars 228 240
Asteroids 390 420
Jupiter 778 780
Saturn 1429 1500
Uranus 2875 2940
Neptune 4505 5820