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There are infinitely many polynomials of order 5 that will give these as the first five numbers and any one of these could be "the" rule. 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.
A rule, based on a polynomial of order 4 is:U(n) = (35n^4 - 394n^3 + 1555n^2 - 2420n + 1284)/4 for n = 1, 2, 3, ...
What else can I help you with?
Which number comes next in this series 15 18 54 57 171?
174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
What is the next number in the sequence 18 15 5 39 36?
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
What number comes next in the sequence 6 12 9 18 15?
6 12 9 18 15 30 27 54 51
15 18 54 57 171?
the next two are 174 and 522.
Which numbers comes next in a series 15 18 54 57 171?
The pattern is add three and then multiply by three. The next number is 174.
Which number comes next in this series 15 18 54 57 171?
174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
What is the 18th triangular number?
The 18th triangular number is calculated using the formula ( T_n = \frac{n(n + 1)}{2} ), where ( n ) is the position in the sequence. For ( n = 18 ), this gives ( T_{18} = \frac{18 \times 19}{2} = 171 ). Therefore, the 18th triangular number is 171.
What is the next number in the sequence 18 15 5 39 36?
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
Add 2 to 171 to make it less than 18?
2 + 171=173 1 + 7 + 3 = 11 < 18
What number should come next in the following sequence 18 21 17 20 16 19 15?
18
What number comes next 10 5 8 20 15 18 30?
The next number in the sequence would be 25.
What number comes next in the sequence 6 12 9 18 15?
6 12 9 18 15 30 27 54 51
What is the missing number in this sequence 17-23- -18-20-25-21-9-15-16?
22
15 18 54 57 171?
the next two are 174 and 522.
Which numbers comes next in a series 15 18 54 57 171?
The pattern is add three and then multiply by three. The next number is 174.
Which number comes next in this series 15-18-54-57-171?
The pattern in the series appears to alternate between adding 3 and multiplying by 3. Starting with 15, we add 3 to get 18, then multiply by 3 to get 54. Next, we add 3 to 54 to get 57, and then multiply by 3 to reach 171. Following this pattern, the next step is to add 3 to 171, which gives us 174. Thus, the next number in the series is 174.
1 plus 2 plus 3 plus ... equals 171?
The final number in this sum would be 18: 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 = 171
