It's likely you're thinking of the original Japanese broadcast, which aired 52 episodes in its first season. This is the same number as the international release, including Australia. The difference is the *order* in which some episodes were released.
* Japanese Broadcast: Episodes followed a specific order, introducing Pokemon and storylines in a certain sequence.
* International Release: Some episodes were rearranged for better pacing and story flow in the international release, which is what Australians would have seen.
There are some minor variations in episode order between different international regions, but there's no evidence suggesting Australia had a significantly different episode count compared to other countries.
If you're still unsure, it might be helpful to double-check your source or consult a reliable Pokemon resource like Bulbapedia. They provide comprehensive episode lists and details for each region!