I'm guessing your sequence is 1, 3, 6, 10, 15, ...
In which case it continues: 21, 28, 36, 45, 55, 66, ...
(These are the triangular numbers.)
10
37.
What is the the next number in the sequence 1,2,4,7,11,.....
it is 7
63
A single number, such as 2481020, cannot define a sequence.
36864
10
Each following number in the sequence is being divided by 4. Therefore, the next number in the sequence is 3/4 = 0.75.
10
10
5
8
62
37.
What is the the next number in the sequence 1,2,4,7,11,.....
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