163 is the next number, look at the difference between the number, they increase by 12, 18, 24, 30, 36, so the next would be 121 + 42 = 163.
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+9
2n^2-1
As given, the sequence is too short to establish the generating rule. If the second term was 19 and NOT 29, then the nth term is tn = 6*n + 7 or 6(n+1)+1
The nth term is 7n-4 and so the next number in the sequence is 31
10n + 1