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9 October, 16:25

What is the Pattern 4,25,130,655

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Answers (2)
  1. 9 October, 17:36
    0
    Somewhere a round six

    i think 6.25
  2. 9 October, 19:49
    0
    This pattern looks complicated so it could be anything. One possible pattern is

    a (n) = (21·5ⁿ - 25) / 20

    So pattern starts at n=1 and sequence would be 4, 25, 130, 655, 3280, ...
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