+3, -3, +4, -3, +5, -3, (+6, -3, +7, -3...)
3 is the answer
They are -30 and -147. My rule is Un = (-25n4 + 326n3 - 1487n2 + 2746n - 1680)/24 for n = 1, 2, 3, ...
3 4 5 6 The next number is 1 plus the previous number So the pattern rule is the next number is n + 1
Add 3 each time
i0 = 4; in = in-1 - 3
+3 -3 +4 -3 +5 -3
Starting with the zero, you add numbers sequentially. So, you add 1, then 2, then 3 then 4 etc.
3 is the answer
The rule for the nth term is t(0) = 23 t(n) = mod[t(n-1) + 2n-1, 26] for n = 1, 2, 3, ...
They are -30 and -147. My rule is Un = (-25n4 + 326n3 - 1487n2 + 2746n - 1680)/24 for n = 1, 2, 3, ...
3 4 5 6 The next number is 1 plus the previous number So the pattern rule is the next number is n + 1
Start at 1. Multiply by 3. Subtract 1. Multiply by 3. Subtract 1. Repeat this pattern.
t(n) = 3(n-1) + 1, for n = 1, 2, 3, etc
Add 3 each time
i0 = 4; in = in-1 - 3
multiplication pattern
Add the increasing numbers by one - as in 0 1 2 3 4 5 6 etc 1 + 0 = 1 1 + 1 = 2 2 + 2 = 4 4 + 3 = 7 7 + 4 = 11 11 + 5 = 16 16 + 6 = 22