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Complete this number sequence

1, __ , 2 , 6, 120, 40320, 6227020800 , __ , 2.952328e+38, __ , __ , __

Can you do it?

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  • $\begingroup$ Pointing out that this sequence is on OEIS, so it makes it rather easy. $\endgroup$ – ZanyG Feb 1 at 5:49
  • $\begingroup$ Even if it weren't, it's not too hard to notice one thing all the numbers have in common, which again leads pretty directly to a solution... $\endgroup$ – Gareth McCaughan Feb 1 at 11:23
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These are

factorials of fibonacci numbers

So the missing numbers are

1!, 1!, 2!, 3!, 5!, 8!, 13!, 21!, 34!, 55!, 89!, 144!, these are rather large numbers, 5.1x10^19, 1.3x10^73, 1.7x10^136, 5.6x10^249

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