With a suitable choice of the generating rule, any number of your choice can be next.
A simple polynomial, though is
Un = (n3 - 8n2 + 11n + 36)/2 for n = 1, 2, 3, etc which gives the next number in the sequence as another 8.
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49
10
485
The next number is 485.
The next number is 17 because each number is increasing by increments of 3