3 years ago

What is the rule of this pattern 1, 21, 85, 341

Mathematics

2 answers:

Lilit [14]3 years ago

7 0

Multiply everything except the first starting number by 4 then add 1

weqwewe [10]3 years ago

4 0

5 x 4 +1 =21

21 x 4 +1 = 85

85 x 4 + 1 = 341

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