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There are many posible answers. One of them is

Un = (-n4 + 13n3 - 53n2 + 95n - 36)/6 for n = 1, 2, 3, ...

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12y ago

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Related Questions

What is the nth term for sequence 3 12 27 64 75 108?

There is no pattern


The number which best completes the sequence below is 1 12 5 10 12 18?

The sequence appears to alternate between adding and subtracting numbers. The pattern seems to be +11, -7, +5, -2, +6. Following this pattern, the next number in the sequence would be +3 from the previous number, which would be 21.


What number best completes the sequence 2 9 3 14 4 19?

13 20 12


How would you identify and extend the pattern to find the next number in this sequence 3 12 48 192?

To identify the pattern in the sequence 3, 12, 48, 192, we can observe that each number is multiplied by an increasing factor: 3 × 4 = 12, 12 × 4 = 48, and 48 × 4 = 192. Hence, the pattern involves multiplying each term by 4. To find the next number, we multiply 192 by 4, resulting in 768. Thus, the next number in the sequence is 768.


What best answer completes this sequence 2 9 5 13 10 19 17?

Pattern: +7,-4,+8,-3,+9,-2... Pattern continuation: +10,-1,+11,*0,+12,+1 17+10=27


Which number should come next1.4.19.25?

The pattern in the sequence 1, 4, 19, 25 can be identified by looking at the differences between consecutive numbers: 4 - 1 = 3, 19 - 4 = 15, and 25 - 19 = 6. The differences themselves (3, 15, 6) do not follow a clear arithmetic or geometric pattern. However, if we analyze the sequence further, the next number could be 36, as it fits a non-linear pattern.


What is the next number in sequence 4 12 15 45 48?

The sequence reflects a pattern of multiplying by 3, then adding 3, to each successive value. The next value would be 144. Explanation: 4x3=12, 12+3=15, 15x3=45, 45+3=48, 48x3=144


What is the following pattern in the sequence 3 -6 12 4 20?

3, -6, 12, 4, 20, 13, 27, 21, 33 -9, +18, -8, +16, -7, +14, -6, +12


What is the fraction form of 3 is to 12 is to 4 in ratio?

3/19 : 12/19 : 4/19


What is the sequence of 361224?

If one may choose the break points, it looks like simple doubling: 3 - 6 - 12 - 24


What are the next two numbers in the pattern 1 3 7 13 19?

21 and 13. The pattern is t(n) = (-n4 + 10n3 - 23n2 + 38n - 12)/12


What is the next number in this pattern 3 4 7 8 11?

The pattern seems to be +1 +3 +1 +3 (3+1 = 4, 4+3 = 7, 7+1 = 8, etc...) So next in the sequence would be 12.