The numbers are increasing by 1,4,9,16,25,36.... which are square numbers so the next increase is 49. Making the next number in the sequence 141
21. This is the Fibonacci series.
From the pattern (n + 4, n + 2, n + ?) I would say the next following number is 20 (n + 1).
5+5 = 10 10+5 = 15 15-5 = 15 10+5 = 15
34. Each number is the sum of the two preceding numbers. This is called the Fibonacci Sequence.
A single number, such as 3773949588525642992, does not constitute a sequence.
Dodging numbers may be missing numbers in a sequence. For example, the underscore in the following sequence represents such a number: 2, 4, _ , 8, 10.
23. They're all prime numbers
The difference between each number and the next number is a power of 3: 1, 3, 9, 27. So to get the next number, just add the next power of 3 (81).
The next number in the sequence would be 23. The sequence consists of prime numbers.
No, it would be 62. The equation is: f(n) = 2(f(n - 1) + 1), with f(0) = 0. So f(5) = 2(30 + 1) = 62
18.104.22.168.4.6 It seems that the sequence takes the doubled numbers than adds two to the said number, such as five. So with that theory it would be logical that six would come after the doubled fours.
21. Add the last 2 numbers to get the next.
A single number, such as 13579, does not define a sequence.
There is no sequence, please add one and I'll help.
Since there is only one number, there is no sensible answer.