Assuming it continues 15, 21, 28, ... then it is the triangular numbers.
I do not believe that the sequence has any specific name.
In order from 1 to 10, the sequence is: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. This is a simple numerical progression where each number increases by one from the previous number. It represents the first ten positive integers.
It is any sequence of numbers. For example: 1 3 5 7 9 11 .... - this is the sequence of odd numbers. 1 4 65 4556 4 3 76 ... - this is probably not a special sequence at all.
A numerical pattern that increases or decreases at a constant rate is known as an arithmetic sequence. In this sequence, each term is obtained by adding or subtracting a fixed number, called the common difference, to the previous term. For example, the sequence 2, 5, 8, 11 increases by a constant rate of 3, while the sequence 10, 7, 4, 1 decreases by a constant rate of 3.
10^-1
The sequence "12345678910" is often referred to as a "consecutive number sequence" or simply a "counting sequence." It represents a series of integers starting from 1 and increasing by 1 up to 10. In mathematical terms, it can be described as a portion of the natural numbers.
X=10 and I=1 IX=9 because I<X and I comes before X therefore IX= 10-1 XIX= 10 + 9 =19 OR It can be done by the following method: Write the numerical value of each roman number. e.g. 10,1,10 These numbers should be in descending order i.e. first number should be the largest, second should be less than or equal to first and so on. In XIX, numerical values are 10,1,10 clearly 10 at the third place does not follow the sequence so number at 2nd place will be subtracted from the sum i.e. 10+(-1)+10=19 Take another example of DCXLIX. Write the numerical value of each roman number. 500,100,10,50,1,10. Clearly 50 at 4th place and 10 at 6th place do not follow the sequence. So, 10 + 1=11 will be subtracted from the sum i.e. 500+100+(-10)+50+(-1)+10=649
1/10
Fibonacci Sequence
It is a sequence of three integers.
The number is dived by 10 so 1000, 100, 10, 1, 1/10, 1/100 1/000
Fibonacci sequence Fibonacci sequence