6
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What could be the next number in the sequence:

57, 74, 65, 61, 37, 58, ?

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  • 1
    $\begingroup$ You should start this sequence with 4 and see what happens... :) $\endgroup$ – Stiv Feb 17 at 23:30
  • 3
    $\begingroup$ @Stiv You'd probably end up with something like this :) $\endgroup$ – Avi Feb 18 at 0:05
  • $\begingroup$ Ooh that's nice $\endgroup$ – RIPPLR Feb 19 at 1:53
9
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The next value is

89

The pattern is

The sum of the squares of each digit of the previous value

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