Turn a transistor on when any one of nine LEDs is on using an LM3914
If you power LEDs 2 to 10 via a small resistor, you can look at the volt drop across this resistor to see that at least one of those LEDs is activated. You might need to use a comparator. 

Alternatively you could diode-or outputs LED2 to LED10 to "acquire" the same information. Any one of those outputs going low would be seen on the common point of the diode-or gate as a low going signal. A resistor from the common-anodes of the diode-or up to 5V is also required.

EDIT SECTION - the question has changed slightly - the lower three blinking LEDs would cause a direct implementation of my above answers to "blink" the detection signal. This can be "put right" by adding a monostable circuit after the comparator or diode-or gate in order to keep the detection signal "valid" throughout the blink process. Should LED2 to 10 be turned off during the time delay added by the monostable, this would not be seen until the monostable period was finished. Should this be a problem I don't see any other solution other than using another LM3914 that doesn't blink the LEDs or, have a separate mechanism for blinking the LEDs.