We need to look for a specific sequence: [Symbol] → [Number] → [Symbol]
Ω 9 2 # 1 8 736∗£+54@ (symbol) -> No
7: left=$ (symbol), right=3 (number) -> No
3: left=7 (number), right=6 (number) -> No
6: left=3 (number), right=* (symbol) -> No
5: left=+ (symbol), right=4 (number) -> No
4: left=5 (number), right=@ (symbol) -> No
None of the numbers match the pattern Symbol - Number - Symbol.
So the total number of such numbers is 0 (None).
Final Answer
There are none (0) such numbers in the series.