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29 January, 23:05

Define the sequence: 1, 3, 7, 13, 21, ... recursively

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  1. 29 January, 23:19
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    They keep on adding by even numbers. From 1-3 there is 2 between the number from 3-7 it's 4 from 7-13 its 6 from 13-21 it's 8.

    Step-by-step explanation:

    The next number is the sequence would be 31 beucase 10 is the next even number and 21+10=31.
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