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Each successive number is the sum of the previous number times 2, plus 1.

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10y ago
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Q: What is the rule to the pattern 1 3 7 15?
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Related questions

What is the rule for this pattern 1-3-2-6-5-15-14-42-41?

multiplication pattern


What is the pattern rule for this pattern 1-3-2-6-5-15-14-42-41?

Start at 1. Multiply by 3. Subtract 1. Multiply by 3. Subtract 1. Repeat this pattern.


What is the pattern rule for this pattern 1 3 5 15 17 51?

255 ÷ 1 = 255 255 ÷ 3 = 85 255 ÷ 5 = 51 255 ÷ 15 = 17 255 ÷ 17 = 15 255 ÷ 51 = 5 255 ÷ 85 = 3 255 ÷ 255 = 1


What is the pattern rule for pattern 35-21-1-13-15-34?

One possible rule is: Un = (219n5 - 3755n4 + 24075n3 - 70645n2 + 92166n - 36960)/120 for n = 1, 2, 3, etc


What is the pattern rule for 3-6-9-12-15?

The nth term, t(n) = 3*n, where n= 1, 2, 3, etc


What is the pattern rule for this pattern 1-4-7-10?

3 is the answer


What is the pattern rule for this pattern 1 3 2 6 5 15 14 42 41?

The answer is (no.) x3 = (no. 2) - 1 = (no. 3) x3= (no.4) x4 and so on... 1 x 3 = 3 - 1 = 2 x 3 = 6 - 1 = 5 x 3 = 15 - 1 = 14 x 3 = 42 - 1 = 41. :D Hope i helped


What is the pattern rule of 2 4 7 11 15?

The pattern will be +2, +3, +4, +4


What is the pattern rule for this pattern 15 24 42 78 150?

There are many possible answers. One possible rule is: Un = (3n4 - 18n3 + 69n2 - 54n + 120)/8 for n 1, 2, 3, ...


What is pattern rule for pattern 26-22-7-27-15-34?

One possible rule is: Un = (243n5 - 4210n4 + 27225n3 - 60830n2 + 106452n - 45960)/120 for n = 1, 2, 3, etc


What is the pattern rule for 1-3-6-10-15?

21-28-36-45-55-66-74-87-101


What is the rule to the pattern 1 3 7 15 31?

its Mersenne's Number f(n)= (2^n) -1 where n is the number of sequence. so f(1) = 1 f(2) = 3 f(3) = 7 f(4) = 15 f(5) = 31 ...