Use Q13, it starts at Q0 so that is 14 in real money. Funnily enough I recommended this chip to a work colleague a few days ago for a time out function, my brain sucked it out of the dim and distant past.
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I appreciate I need to build a circuit involving caps and resistors to get the whole thing oscillating and that a Darlington pair will be required to drive an LED
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The datasheet gives the circuit for crystal use, a couple of caps and a resistor. If you run it from 5V (three 1.5V cells is good) it will drive a white LED directly, no resistor or transistor needed. Modern LEDs are very bright and the chip won't mind.