A simple answer, based on a linear rule is U(n) = 5n - 23 for n = 1, 2, 3, ...
The expression is -9 + 13 + 12
The rule that generates the sequence is Un = 9 + 2n (for n = 1, 2, ...
205. it is not that hard to figure out. :P
It is: 2n+9
The nth term is: 2n+7 and so the next number will be 19
2n + 1
It is 4n-13 and so the next number will be 11
The nth term is 2n+5 and so the next number is 17
nth term = 5 +8n
The nth term is: 5-6n
The nth term is 6n+1 and so the next term will be 31
The nth term is 3n+7 and so the next number will be 22
The nth term is: 3n+1 and so the next number will be 16
The nth term is 25-4n and so the next term will be 5
The sequence is simply achieved by adding 2 to each value9+2=1111+2=1313+2=1515+2=1717+2=1919+2=21so the nth term can be calculatedThe value of the nth term = the value of (nth-1 term) +2.