Mathematica breaks [closed]

I write the following command. After running for seconds (less than a minute), Mathematica breaks and nothing is displayed. Why?

a = Tuples[{1, I, -I}, {1, 20}]


Bests,

closed as off-topic by xzczd, gwr, Henrik Schumacher, rhermans, MarcoBMay 31 '18 at 13:27

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – xzczd, gwr, Henrik Schumacher, rhermans, MarcoB
If this question can be reworded to fit the rules in the help center, please edit the question.

• Please don't add [bugs] tag until the community has confirmed it. And, this is definitely not a bug, you're just out of memory: Table[ByteCount[Tuples[{1, I, -I}, i]]/1024^2., {i, 9, 11}] – xzczd May 31 '18 at 12:21
• Thanks. How can I deal with that? – A. Mpi May 31 '18 at 12:27
• That depends. Lazy list is a possible choice: mathematica.stackexchange.com/q/109598/1871 mathematica.stackexchange.com/q/9554/1871 – xzczd May 31 '18 at 12:31
• Your question may be put on-hold as it seems to be off-topic, i.e it arises from a simple mistake (out of memory) and is unlikely to help any future visitors. Don't be discouraged by that cleaning-up policy. Your future good questions are welcome. Learn about common pitfalls here. – rhermans May 31 '18 at 12:46
• You can still edit your question and make it about finding a way around the calculation you need. In that case the hold would be removed. – rhermans May 31 '18 at 12:48