For an integral sequence the next number is 6 (add 5 subtract 7 pattern).
0.1
10
40.
28
Seven (7) is the next number to the sequence in the question.
266
it is 7
58
35
The difference between the numbers is increasing by 2 every time. Therefore, 18 + 9.5 = 27.5 is the next number in the sequence.
This is a peculiar number sequence which follows the following rule: +7, -4, +8, -3, +9, -2... The next few functions would be +10, -1, +11, -0 And thus the next few numbers in the sequence would be 17+10=27, 27-1=26, and so on. The sequence in total goes 2, 9, 5, 13, 10, 19, 17, 27, 26, 37, 37.
The sequence is generated using cubes, or n^3. The next number in the sequence will be 4^3, or 256.