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Any number that you choose can be the next number. It is easy to find a rule based on a polynomial of order 4 such that the first four numbers are as listed in the question followed by your chosen number in the next place. There are also non-polynomial solutions. Short of reading the mind of the person who posed the question, there is no way of determining which of the infinitely many solutions is the "correct" one.
One possible solution, using a polynomial of order 3, isU(n) = 39*n^3 - 210*n^2 + 373*n - 197 for n = 1, 2, 3, 4, 5 which gives U(5) = 1293.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoIt is: 1365 because 5+16 = 21, 21+64 = 85, 85+256 = 341 and 256+1024 = 1365
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What is next in the sequence 5 21 85 341?
As you are multiplying by 4 and then adding 1, the next number is 1365.
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The next number in the sequence 3-15-6-30-21 is -207.
What is the next number in the sequence 11 21 3112 512213?
71422315
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16 21 22 29
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312211
What is next in the sequence 5 21 85 341?
As you are multiplying by 4 and then adding 1, the next number is 1365.
What is the next number in the sequence 3-15-6-30-21?
The next number in the sequence 3-15-6-30-21 is -207.
Next number in the sequence 16 26 21 31?
a
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The next number in this sequence is 13112221.
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20
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7203
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It is: 34
What is the next number in the sequence 11 21 3112 512213?
71422315
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16 21 22 29
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21
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312211
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34
